HOLLAND, D. M. P., SHAW, D. A., TOWNSEND, D. and POWIS, I, 2023. Valence shell electronically excited states of imidazole and 1-methylimidazole MOLECULAR PHYSICS. 121(7-8), e2122614 FACCIALA, D., DEVETTA, M., BEAUVARLET, S., BESLEY, N., CALEGARI, F., CALLEGARI, C., CATONE, D., CINQUANTA, E., CIRIOLO, A. G., COLAIZZI, L., CORENO, M., CRIPPA, G., DE NINNO, G., DI FRAIA, M., GALLI, M., GARCIA, G. A., MAIRESSE, Y., NEGRO, M., PLEKAN, O., GEETHA, P. PRASANNAN, PRINCE, K. C., PUSALA, A., STAGIRA, S., TURCHINI, S., UEDA, K., YOU, D., ZEMA, N., BLANCHET, V., NAHON, L., POWIS, I. and VOZZI, C., 2023. Time-Resolved Chiral X-Ray Photoelectron Spectroscopy with Transiently Enhanced Atomic Site Selectivity: A Free-Electron Laser Investigation of Electronically Excited Fenchone Enantiomers PHYSICAL REVIEW X. 13(1), 011044 FORBES, RUARIDH, HOCKETT, PAUL, POWIS, IVAN, BOZEK, JOHN D., PRATT, STEPHEN T. and HOLLAND, DAVID M. P., 2022. Auger electron angular distributions following excitation or ionization from the Xe 3d and F 1s levels in xenon difluoride PHYSICAL CHEMISTRY CHEMICAL PHYSICS. 24(3), 1367-1379 KISELEV, M. D., REINHARDT, M., PATANEN, M., KIVIMAKI, A., POWIS, I, ZATSARINNY, O., GRUM-GRZHIMAILO, A. N. and HOLLAND, D. M. P., 2022. An experimental and theoretical study of the Kr 3d correlation satellites JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. 55(5), POHL, MARVIN N., MALERZ, SEBASTIAN, TRINTER, FLORIAN, LEE, CHIN, KOLBECK, CLAUDIA, WILKINSON, IAIN, THUERMER, STEPHAN, NEUMARK, DANIEL M., NAHON, LAURENT, POWIS, IVAN, MEIJER, GERARD, WINTER, BERND and HERGENHAHN, UWE, 2022. Photoelectron circular dichroism in angle-resolved photoemission from liquid fenchone PHYSICAL CHEMISTRY CHEMICAL PHYSICS. 24(14), 8081-8092 HADIDI, RIM, BOZANIC, DUSAN K., GANJITABAR, HASSAN, GARCIA, GUSTAVO A., POWIS, IVAN and NAHON, LAURENT, 2021. Conformer-dependent vacuum ultraviolet photodynamics and chiral asymmetries in pure enantiomers of gas phase proline COMMUNICATIONS CHEMISTRY. 4(1), DURAN, AYSE T., POWIS, IVAN, HOLLAND, DAVID M. P., NICOLAS, CHRISTOPHE, BOZEK, JOHN, TROFIMOV, A. B., GRIGORICHEVA, E. K. and SKITNEVSKAYA, A. D., 2021. Vibronic interaction in trans-dichloroethene studied by vibration- and angle-resolved photoelectron spectroscopy using 19-90 eV photon energy JOURNAL OF CHEMICAL PHYSICS. 154(9), HOLLAND, D. M. P., NANDI, S., NICOLAS, C., BOZEK, J. D., PATANEN, M. and POWIS, I., 2021. An experimental and theoretical study of the valence shell photoelectron spectrum of oxalyl chloride CHEMICAL PHYSICS. 542, PATANEN, M., ABID, A. R., PRATT, S. T., KIVIMAEKI, A., TROFIMOV, A. B., SKITNEVSKAYA, A. D., GRIGORICHEVA, E. K., GROMOV, E. V., POWIS, I. and HOLLAND, D. M. P., 2021. Valence shell photoelectron angular distributions and vibrationally resolved spectra of imidazole: A combined experimental-theoretical study JOURNAL OF CHEMICAL PHYSICS. 155(5), FORBES, R., HOCKETT, P., POWIS, I, BOZEK, J. D., HOLLAND, D. M. P. and PRATT, S. T., 2021. Photoionization from the Xe 4d orbitals of XeF2 JOURNAL OF CHEMICAL PHYSICS. 155(19), SINGH, DHIRENDRA P., THOMPSON, JAMES O. F., REID, KATHARINE L. and POWIS, IVAN, 2021. Influence of Vibrational Excitation and Nuclear Dynamics in Multiphoton Photoelectron Circular Dichroism of Fenchone JOURNAL OF PHYSICAL CHEMISTRY LETTERS. 12(46), 11438-11443 FORBES, RUARIDH, DE FANIS, ALBERTO, ROLLES, DANIEL, PRATT, STEPHEN T., POWIS, IVAN, BESLEY, NICHOLAS A., MILOSAVLJEVIC, ALEKSANDAR R., NICOLAS, CHRISTOPHE, BOZEK, JOHN D. and HOLLAND, DAVID M. P., 2020. Photoionization of the I 4d and valence orbitals of methyl iodide JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. 53(15), SINGH, DHIRENDRA P., DE OLIVEIRA, NELSON, GARCIA, GUSTAVO A., VREDENBORG, ARNO and POWIS, IVAN, 2020. Experimental and Theoretical Investigation of the 3sp(d) Rydberg States of Fenchone by Polarized Laser Resonance-Enhanced-Multiphoton-Ionization and Fourier Transform VUV Absorption Spectroscopy CHEMPHYSCHEM. 21(21), 2468-2483 GANJITABAR, HASSAN, SINGH, DHIRENDRA P., CHAPMAN, RICHARD, GARDNER, ADRIAN, MINNS, RUSSELL S., POWIS, IVAN, REID, KATHARINE L. and VREDENBORG, ARNO, 2020. The role of the intermediate state in angle-resolved photoelectron studies using (2+1) resonance-enhanced multiphoton ionization of the chiral terpenes, alpha-pinene and 3-carene MOLECULAR PHYSICS. TROFIMOV, A B, POWIS, I, MENZIES, R C, HOLLAND, D M P, ANTONSSON, E, PATANEN, M, NICOLAS, C, MIRON, C, SKITNEVSKAYA, A D, GROMOV, E V and KOPPEL, H, 2018. cis-dichloroethene: Valence shell vertical ionization and vibronic coupling in the low-lying cationic states. The Journal of chemical physics. 149(7), 074306 FORBES R, DE FANIS A, BOMME C, ROLLES D, PRATT ST, POWIS I, BESLEY NA, NANDI S, MILOSAVLJEVIĆ AR, NICOLAS C, BOZEK JD, UNDERWOOD JG and HOLLAND DMP, 2018. Auger electron angular distributions following excitation or ionization of the I 3d level in methyl iodide. The Journal of chemical physics. 149(9), 094304 RUARIDH FORBES, ALBERTO DE FANIS, CÉDRIC BOMME, DANIEL ROLLES, STEPHEN T. PRATT, IVAN POWIS, NICHOLAS A. BESLEY, MARC SIMON, SAIKAT NANDI, ALEKSANDAR R. MILOSAVLJEVI, CHRISTOPHE NICOLAS, JOHN D. BOZEK, JONATHAN G. UNDERWOOD and DAVID M.P. HOLLAND, 2018. Photoionization of the iodine 3d, 4s and 4p orbitals in methyl iodide: Journal of Chemical Physics Journal of Chemical Physics. 149, 144302 POWIS, I., MENZIES, R. C., HOLLAND, D. M. P., TROFIMOV, A. B., SKITNEVSKAYA, A. D., GROMOV, E. V., ANTONSSON, E., PATANEN, M., NICOLAS, C. and MIRON, C., 2018. Photoionization dynamics of cis-dichloroethene from investigation of vibrationally resolved photoelectron spectra and angular distributions JOURNAL OF CHEMICAL PHYSICS. 149(7), A. B. TROFIMOV, I. POWIS, R. C. MENZIES, D. M. P. HOLLAND, E. ANTONSSON, M. PATANEN, C. NICOLAS, C. MIRON, A. D. SKITNEVSKAYA, E. V. GROMOV and H. KÖPPEL, 2018. An experimental and theoretical study of the photoelectron spectra of cis-1,2-dichloroethene: Valence shell vertical ionization and vibronic coupling in the low-lying cationic states: Journal of Chemical Physics Journal of Chemical Physics. 149(7), 074306 RAFIEE FANOOD, MOHAMMAD M., GANJITABAR, HASSAN, GARCIA, GUSTAVO A., NAHON, LAURENT, TURCHINI, STEFANO and POWIS, IVAN, 2018. Intense Vibronic Modulation of the Chiral Photoelectron Angular Distribution Generated by Photoionization of Limonene Enantiomers with Circularly Polarized Synchrotron Radiation: ChemPhysChem Chemphyschem. 19, 921-933 I. POWIS, R. C. MENZIES, D. M. P. HOLLAND, A. B. TROFIMOV, A. D. SKITNEVSKAYA, E. V. GROMOV, E. ANTONSSON, M. PATANEN, C. NICOLAS and C. MIRON, 2018. Photoionization dynamics of cis-dichloroethene from investigation of vibrationally resolved photoelectron spectra and angular distributions: Journal of Chemical Physics Journal of Chemical Physics. 149(7), 074305 RUARIDH FORBES, ALBERTO DE FANIS, CÉDRIC BOMME, DANIEL ROLLES, STEPHEN T. PRATT, IVAN POWIS, NICHOLAS A. BESLEY, MARC SIMON, SAIKAT NANDI, ALEKSANDAR R. MILOSAVLJEVI, CHRISTOPHE NICOLAS, JOHN D. BOZEK, JONATHAN G. UNDERWOOD and DAVID M.P. HOLLAND, 2018. Photoionization of the iodine 3d, 4s and 4p orbitals in methyl iodide: Journal of Chemical Physics Journal of Chemical Physics. 149, 144302 RUARIDH FORBES, ALBERTO DE FANIS, CÉDRIC BOMME, DANIEL ROLLES, STEPHEN T. PRATT, IVAN POWIS, NICHOLAS A. BESLEY, SAIKAT NANDI, ALEKSANDAR R. MILOSAVLJEVI, CHRISTOPHE NICOLAS, JOHN D. BOZEK, JONATHAN G. UNDERWOOD and DAVID M.P. HOLLAND, 2018. Auger electron angular distributions following excitation or ionization of the I 3d level in methyl iodide: Journal of Chemical Physics Journal of Chemical Physics. 149(9), 094304 TROFIMOV, A. B., HOLLAND, D. M. P., POWIS, I., MENZIES, R. C., POTTS, A. W., KARLSSON, L., GROMOV, E. V., BADSYUK, I. L. and SCHIRMER, J., 2017. Ionization of pyridine: Interplay of orbital relaxation and electron correlation JOURNAL OF CHEMICAL PHYSICS. 146(24), A. B. TROFIMOV, D. M. P. HOLLAND, I. POWIS, R. C. MENZIES, A. W. POTTS, L. KARLSSON, E. V. GROMOV, I. L. BADSYUK and J. SCHIRMER, 2017. Ionization of pyridine: Interplay of orbital relaxation and electron correlation: Journal of Chemical Physics Journal of Chemical Physics. 146(24), 244307 POWIS, I., PATANEN, M., ANTONSSON, E., NICOLAS, C., MIRON, C. and HOLLAND, D. M. P., 2017. Vibration-dependent photoelectron angular distributions and branching ratios observed across the Cooper-minimum region of bromobenzene: Physical Review A Physical Review A. 96(1), 013413 HOLLAND, D. M. P., POWIS, I., TROFIMOV, A. B., MENZIES, R. C., POTTS, A. W., KARLSSON, L., BADSYUK, I. L., MOSKOVSKAYA, T. E., GROMOV, E. V. and SCHIRMER, J., 2017. An experimental and theoretical study of the valence shell photoelectron spectra of 2-chloropyridine and 3-chloropyridine: Journal of Chemical Physics Journal of Chemical Physics. 147(16), 164307 GARCIA, GUSTAVO A., DOSSMANN, HÉLOÏSE, NAHON, LAURENT, DALY, STEVEN and POWIS, IVAN, 2017. Identifying and understanding strong vibronic interaction effects observed in the asymmetry of chiral molecule photoelectron angular distributions: ChemPhysChem Chemphyschem. 18(5), 500-512 LAURENT NAHON, LIPSA NAG, GUSTAVO A. GARCIA, IULIIA MYRGORODSKA, UWE MEIERHENRICH, SAMUEL BEAULIEU, VINCENT WANIE, VALÉRIE BLANCHET, ROMAIN GÉNEAUX and IVAN POWIS, 2016. Determination of accurate electron chiral asymmetries in fenchone and camphor in the VUV range: sensitivity to isomerism and enantiomeric purity: Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics. 18(18), 12696-12706 SCHNEIDER, M., SOSHNIKOV, D. YU., HOLLAND, D. M. P., POWIS, I., ANTONSSON, E., PATANEN, M., NICOLAS, C., MIRON, C., WORMIT, M., DREUW, A. and TROFIMOV, A. B., 2015. A fresh look at the photoelectron spectrum of bromobenzene: A third-order non-Dyson electron propagator study: The Journal of Chemical Physics The Journal of Chemical Physics. 143(14), 144103 RAFIEE FANOOD, MOHAMMAD M., N. BHARGAVA RAM, C. STEFAN LEHMANN, IVAN POWIS and MAURICE H.M. JANSSEN, 2015. Enantiomer specific analysis of multi-component mixtures by correlated electron imaging–ion mass spectrometry: Nature Communications Nature Communications. 6, 7511 POWIS, I., HOLLAND, D. M. P., ANTONSSON, E., PATANEN, M., NICOLAS, C., MIRON, C., SCHNEIDER, M., SOSHNIKOV, D. YU., DREUW, A. and TROFIMOV, A. B., 2015. The influence of the bromine atom Cooper minimum on the photoelectron angular distributions and branching ratios of the four outermost bands of bromobenzene: Journal of Chemical Physics Journal of Chemical Physics. 143(14), 144304 STEVEN DALY, IVAN POWIS, MAURICE TIA, GUSTAVO A. GARCIA and LAURENT NAHON, 2015. Dissociative VUV photoionization of butanediol isomers: International Journal of Mass Spectrometry International Journal of Mass Spectrometry. 376, 46-53 TIA, MAURICE, CUNHA DE MIRANDA, BARBARA, DALY, STEVEN, GAIE-LEVREL, FRANÇOIS, GARCIA, GUSTAVO A., NAHON, LAURENT and POWIS, IVAN, 2014. VUV Photodynamics and Chiral Asymmetry in the Photoionization of Gas Phase Alanine Enantiomers: Journal of Physical Chemistry A Journal of Physical Chemistry A. 118, 2765-2779 GARCIA, GUSTAVO A., DOSSMANN, HELOISE, NAHON, LAURENT, DALY, STEVEN and POWIS, IVAN, 2014. Photoelectron circular dichroism and spectroscopy of trifluoromethyl- and methyl-oxirane: a comparative study: Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics. 16(30), 16214-16224 TIA, MAURICE, CUNHA DE MIRANDA, BARBARA, DALY, STEVEN, GAIE-LEVREL, FRANCOIS, GARCIA, GUSTAVO A., POWIS, IVAN and NAHON, LAURENT, 2013. Chiral Asymmetry in the Photoionization of Gas Phase Amino Acid Alanine at Lyman-: Journal of Physical Chemistry Letters Journal of Physical Chemistry Letters. 4, 2698-2704 POWIS, I., TROFIMOV, A. B., BODZUK, I. L., HOLLAND, D. M. P., POTTS, A. W. and KARLSSON, L., 2013. A study of the valence shell electronic structure and photoionisation dynamics of para-dichlorobenzene and para-bromochlorobenzene: Chemical Physics Chemical Physics. 415, 291-308 POTTS, A. W., HOLLAND, D. M. P., POWIS, I., KARLSSON, L., TROFIMOV, A. B. and BODZUK, I. L., 2013. A study of the valence shell electronic structure and photoionisation dynamics of meta-dichlorobenzene and meta-bromochlorobenzene: Chemical Physics Chemical Physics. 415, 84-97 IVAN POWIS, 2012. Photoelectron Circular Dichroism. In: NINA BEROVA, PRASAD POLAVARAPU, KOJI NAKANISHI and ROBERT WOODY, eds., Comprehensive Chiroptical Spectroscopy 1. John Wiley & Sons. 407-431
DALY, S., POWIS, I., GARCIA, G.A., SOLDI-LOSE, H. and NAHON, L.,, 2011. Photoionization of epichlorohydrin enantiomers and clusters studied with circularly polarized VUV radiation: Journal of Chemical Physics Journal of Chemical Physics. 134(6), 064306 LAURENT NAHON and IVAN POWIS, 2010. Valence Photoelectron Circular Dichroism of Gas Phase Enantiomers. In: ANNE ZEHNACKER, ed., Chiral Recognition in the Gas Phase Taylor & Francis.
NAHON, LAURENT, GARCIA, GUSTAVO A., SOLDI-LOSE, HELOISE, DALY, STEVEN and POWIS, IVAN, 2010. Effects of dimerization on the photoelectron angular distribution parameters from chiral camphor enantiomers obtained with circularly polarized vacuum-ultraviolet radiation.: Physical Review A Physical Review A. 82(3), art. no. 032514 VOLKER ULRICH, SILKO BARTH, SANJEEV JOSHI, UWE HERGENHAHN, ELISABETH A. MIKAJLO, CHRIS J. HARDING and IVAN POWIS, 2008. Giant Chiral Asymmetry in the C 1s Core Level Photoemission from Randomly Oriented Fenchone Enantiomers: Journal of Physical Chemistry A Journal of Physical Chemistry A. 112(16), 3544-3549 IVAN POWIS, CHRIS J. HARDING, SILKO BARTH, SANJEEV JOSHI, VOLKER ULRICH and UWE HERGENHAHN, 2008. Chiral Asymmetry in the Angle-Resolved O and C 1s-1 Core Photoemissions of the R Enantiomer of Glycidol: Physical Review A Physical Review A. 78(5), 052501 IVAN POWIS, 2008. Photoelectron Circular Dichroism in Chiral Molecules. In: J.C. LIGHT, ed., Advances in Chemical Physics 138. Wiley. 267-329
I. POWIS, I. L. ZAYTSEVA, A. B. TROFIMOV, J. SCHIRMER, D. M. P. HOLLAND, A. W. POTTS and L. KARLSSON, 2007. A study of the valence shell electronic structure and photoionization dynamics of selenophene: Journal of Physics B: Atomic, Molecular and Optical Physics Journal of Physics B: Atomic, Molecular and Optical Physics. 40(11), 2019 NAHON, LAURENT, GARCIA, GUSTAVO, POWIS, IVAN, MEIERHENRICH, UWE and BRACK, ANDRÉ, 2007. Advanced search for the origin of life's homochirality: asymmetric photon induced processes on chiral compounds with far UV circularly polarized synchrotron radiation: Proceedings- SPIE the International Society for Optical Engineering Proceedings- Spie the International Society for Optical Engineering. 6694, 669403 M. STENER, D. DI TOMMASO, G. FRONZONI, P. DECLEVA and IVAN POWIS, 2006. Theoretical study on the circular dichroism in core and valence photoelectron angular distributions of camphor enantiomers: Journal of Chemical Physics Journal of Chemical Physics. 124(2), 024326
NAHON, L., GARCIA, G. A., HARDING, C. J., MIKAJLO, E. A. and POWIS, I., 2006. Determination of chiral asymmetries in the valence photoionization of camphor enantiomers by photoelectron imaging using tunable circularly polarized light: Journal of Chemical Physics Journal of Chemical Physics. 125, 114309
HOLLAND, D. M. P., POWIS, I., OHRWALL, G., KARLSSON, L. and VON NIESSEN, W., 2006. A study of the photoionisation dynamics of chloromethane and iodomethane: Chemical Physics Chemical Physics. 326(2-3), 535-550 CHRIS J. HARDING and IVAN POWIS, 2006. Sensitivity of photoelectron circular dichroism to structure and electron dynamics in the photoionization of carvone and related chiral monocyclic terpenone enantiomers: Journal of Chemical Physics Journal of Chemical Physics. 125, 234306
I. POWIS, J. D. THROWER, A. B. TROFIMOV, T. E. MOSKOVSKAYA, J. SCHIRMER, A. W. POTTS, D. M. P. HOLLAND, F. BRUHN and L. KARLSSON, 2005. An experimental and theoretical study of the photoelectron spectrum of hydrogen selenide: Chemical Physics Chemical Physics. 315(1-2), 121-132 CHRIS J. HARDING, ELISABETH A. MIKAJLO, IVAN POWIS, SILKO BARTH, SANJEEV JOSHI, VOLKER ULRICH and UWE HERGENHAHN, 2005. Circular Dichroism in the Angle-Resolved C 1s Photoemission Spectroscopy of Gas-Phase Carvone Enantiomers: Journal of Chemical Physics Journal of Chemical Physics. 123(23), 234310
GARCIA, G. A., NAHON, L., HARDING, C. J., MIKAJLO, E. A. and POWIS, I., 2005. A refocusing modified velocity map imaging electron/ion spectrometer adapted to synchrotron radiation studies: Review of Scientific Instruments Review of Scientific Instruments. 76(5), 053302
SUSAN M. BELLM, JULIA A. DAVIES, PAUL T. WHITESIDE, JINGWEI GUO, IVAN POWIS and KATHARINE L. REID, 2005. An unusual pi* shape resonance in the near-threshold photoionization of S1 para-difluorobenzene.: Journal of Chemical Physics Journal of Chemical Physics. 122(22), 224306
HOLLAND, D. M. P., POWIS, I., KARLSSON, L., TROFIMOV, A. B., SCHIRMER, J. and VON NIESSEN, W., 2004. A study of the photoionisation dynamics of the cyanogen halides: Chemical Physics Chemical Physics. 297(1-3), 55-73 HERGENHAHN, U., RENNIE, E. E., KUGELER, O., MARBURGER, S., LISCHKE, T., POWIS, I. and GARCIA, G., 2004. Photoelectron circular dichroism in core level ionization of randomly oriented pure enantiomers of the chiral molecule camphor: Journal of Chemical Physics Journal of Chemical Physics. 120(10), 4553-4556 POWIS, IVAN, RENNIE, EMMA E., HERGENHAHN, UWE, KUGELER, OLIVER and BUSSY-SOCRATE, REAGAN, 2003. Investigation of the Gas-Phase Amino Acid Alanine by Synchrotron Radiation Photoelectron Spectroscopy: Journal of Physical Chemistry A Journal of Physical Chemistry A. 107(1), 25-34
GARCIA, G. A., NAHON, L., LEBECH, M., HOUVER, J. C., DOWEK, D. and POWIS, I., 2003. Circular dichroism in the photoelectron angular distribution from randomly oriented enantiomers of camphor: Journal of Chemical Physics Journal of Chemical Physics. 119(17), 8781-8784 RENNIE, EMMA E., POWIS, IVAN, HERGENHAHN, UWE, KUGELER, OLIVER, MARBURGER, SIMON and WATSON, TIM M., 2002. Valence and C 1: Journal of Physical Chemistry A Journal of Physical Chemistry A. 106(51), 12221-12228
RENNIE, E. E., POWIS, I., HERGENHAHN, U., KUGELER, O., GARCIA, G., LISCHKE, T. and MARBURGER, S., 2002. Valence and C 1: Journal of Electron Spectroscopy and Related Phenomena Journal of Electron Spectroscopy and Related Phenomena. 125(3), 197-203 HIKOSAKA, Y., ELAND, J. H. D., WATSON, T. M. and POWIS, I., 2001. Molecule frame photoelectron angular distributions from oriented methyl chloride and methyl fluoride molecules: Journal of Chemical Physics Journal of Chemical Physics. 115(10), 4593-4603
GARCIA, G. A., GUYON, P. M. and POWIS, I., 2001. Ionization energy of CF: Journal of Physical Chemistry A Journal of Physical Chemistry A. 105(36), 8296-8301
UNDERWOOD, J. G. and POWIS, I., 2000. Photodissociation of polarized diatomic molecules in the axial recoil limit: Control of atomic polarization: Journal of Chemical Physics Journal of Chemical Physics. 113(17), 7119-7130
UNDERWOOD, J. G. and POWIS, I., 2000. Photofragmentation of CH: Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics. 2(4), 747-756
VAN KLEEF, E. H. and POWIS, I., 1999. Anisotropy in the Preparation of Symmetric Top Excited States. I. One-photon Electric Dipole Excitation: Molecular Physics Molecular Physics. 96, 757-774
DOWNIE, P. and POWIS, I., 1999. The 5: Journal of Chemical Physics Journal of Chemical Physics. 111(10), 4535-4547
POWIS, I. and DOWNIE, P., 1995. Recoil vector correlations in multiparticle fragmentation: the examinations of orientation effects in dissociative vuv photoionization. In: HEPBURN, J. W., ed., Laser Techniques for State-Selected and State-to-State Chemistry III SPIE. 49-59
POWIS, I., BAER, T. and NG, C.-Y., eds., 1995. High Resolution Laser Photoionization and Photoelectron Studies: Wiley Series in Ion Chemistry and Physics John Wiley & Sons.
POWIS, I., 1995. A theoretical CMS-X: Chemical Physics Chemical Physics. 201(1), 189-201
LANE, I. C., MEEHAN, R. and POWIS, I., 1995. Interpretation of the photofragment anisotropy observed upon: Journal of Physical Chemistry Journal of Physical Chemistry. 99(33), 12371-12374 DOWNIE, P., REYNOLDS, D. J. and POWIS, I., 1995. Parallel, multichannel energy and angle resolving electrostatic electron analyzer: Review of Scientific Instruments Review of Scientific Instruments. 66(7), 3807-3818
REID, K. L. and POWIS, I., 1994. Symmetry Considerations in Molecular Photoionization: Fixed Molecule Photoelectron Angular Distributions in C: Journal of Chemical Physics Journal of Chemical Physics. 100, 1066-1074
ROMERO, J., LANE, I. C. and POWIS, I., 1993. Fragmentation of Valence Electronic States of BF: Journal of the Chemical Society: Faraday Transactions Journal of the Chemical Society: Faraday Transactions. 89, 1179-1182
POWIS, I. and REID, K. L., 1993. State-selection and orientation of molecular ions: exploiting the photoelectron-photofragment ion recoil vector correlation. In: NG, C. Y., ed., Laser Techniques for State-Selected and State-State Chemistry SPIE. 444-452
POWIS, I., 1993. Continuum MS-X: Chemical Physics Letters Chemical Physics Letters. 215, 269-274
POWIS, I., 1993. Molecular Photodissociation: Experiment. In: DELGADO-BARRIO, G., ed., Dynamical Processes in Molecular Physics Adam Hilger(IOP). 51-79
LANE, I. C. and POWIS, I., 1993. Changeable Behaviour in the Unimolecular Decay Channels of Electronically Excited States of CH: Journal of Physical Chemistry Journal of Physical Chemistry. 97, 5803-5808
DOWNIE, P., REYNOLDS, D. J., LITCHFIELD, D. J., PARSONS, R. and POWIS, I., 1993. A High Resolution Position Sensitive Charged Particle Detector System for Operation at MHz Countrates: Measurement Science & Technology Measurement Science & Technology. 4, 1293-1296
CREASEY, J. C., JONES, H. M., SMITH, D. M., TUCKETT, R. P., HATHERLY, P. A., CODLING, K. and POWIS, I., 1993. Fragmentation of Valence Electronic States of CF: Chemical Physics Chemical Physics. 174, 441-452
REYNOLDS, D. J., VAN KLEEF, E. H. and POWIS, I., 1991. Energetics and Dynamics in the Dissociative Photoionization of PF: Journal of Chemical Physics Journal of Chemical Physics. 95, 8895-8900
REYNOLDS, D. J. and POWIS, I., 1991. Dissociation Dynamics of D: Journal of the Chemical Society: Faraday Transactions Journal of the Chemical Society: Faraday Transactions. 87, 921-926
POWIS, I., DUTUIT, O., RICHARD-VIARD, M. and GUYON, P.-M., 1990. Photoion Anisotropy in Dissociative Photoionization of CF: Journal of Chemical Physics Journal of Chemical Physics. 92, 1643-1652 POWIS, I. and BLACK, J. F., 1989. Rotational Population and Alignment of CD: Journal of Physical Chemistry Journal of Physical Chemistry. 93, 2461-2470
BLACK, J. F. and POWIS, I., 1988. Rotational Structure and Pre-Dissociation Dynamics of the Methyl 4: Journal of Chemical Physics Journal of Chemical Physics. 89, 3986-3992
BLACK, J. F. and POWIS, I., 1988. A Simultaneous Photofragment Spectroscopy Measurement of Rovibronic and Translational Excitation in the CH: Laser Chemistry Laser Chemistry. 9, 339-358
BLACK, J. F. and POWIS, I., 1988. Competing Ionization and Dissociation of Methyl Iodide in the One-Photon A-Band Region: Chemical Physics Letters Chemical Physics Letters. 148, 479-485
BLACK, J. F. and POWIS, I., 1988. Photofragment Investigations of the 280 nm Photodissociation of Methyl Iodide Using REMPI I Atom Detection: Chemical Physics Chemical Physics. 125, 375-388
POWIS, I., 1987. Characterisation and Uses of Ions Generated by Multi-Photon Ionization. In: ASHFOLD, M. N. R. and BAGGOTT, J. E., eds., Molecular Photodissociation Dynamics Royal Society of Chemistry. 211-243
POWIS, I., 1985. Ionization Processes and Ion Dynamics. In: ROSE, M. E., ed., Mass Spectrometry 8. Royal Society of Chemistry. 1-33
LOW, K. G., HAMPTON, P. D. and POWIS, I., 1985. Molecule Coordinate Frame Anisotropy in Dissociative Photoionization of CF: Chemical Physics Chemical Physics. 100, 401-413
POWIS, I., 1984. Ionization Processes and Ion Dynamics. In: JOHNSTONE, R. A. W., ed., Mass Spectrometry 7. Royal Society of Chemistry. 1-62
OGDEN, I. K., SHAW, N., DANBY, C. J. and POWIS, I., 1983. Competing Dissociation Channels of Nitromethane and Methyl Nitrite Ions and the Role of Electronic and Internal Modes of Excitation: International Journal of Mass Spectrometry and Ion Processes International Journal of Mass Spectrometry and Ion Processes. 54, 41-53
LIGHTFOOT, P. D., POWIS, I. and DANBY, C. J., 1983. A Minimum Energy Reaction Path Barrier for the Hydrogen Elimination Reactions of: Chemical Physics Letters Chemical Physics Letters. 96, 232-236
JOHNSON, K. M., POWIS, I. and DANBY, C. J., 1982. A Photoelectron-Photoion Coincidence Study of Acetaldehyde and Ethylene Oxide Molecular Ions: Chemical Physics Chemical Physics. 70, 329-343
JOHNSON, K. M., POWIS, I. and DANBY, C. J., 1982. Reply to the Comment by J.-P Stadelmann on the Formation of Methyl Cations: Chemical Physics Chemical Physics. 89, 177
MANSELL, P. I., DANBY, C. J. and POWIS, I., 1981. Dissociation of State-Selected Nitrogen Trifuoride Ions: Journal of the Chemical Society: Faraday Transactions II Journal of the Chemical Society: Faraday Transactions II. 77, 1449-1459
JOHNSON, K. M., POWIS, I. and DANBY, C. J., 1981. Scaling Relationships in Photoelectron-Photoion Coincidence Studies: the Acetone Ion Dissociation: Chemical Physics Chemical Physics. 63, 1-11
BLYTH, R. G. C., POWIS, I. and DANBY, C. J., 1981. Competing Predissociations of O: Chemical Physics Letters Chemical Physics Letters. 84, 272-275
POWIS, I., MANSELL, P. I. and DANBY, C. J., 1979. A Photoelectron-Photoion Coincidence Spectrometer for the Study of Translational Energy Release Distributions: International Journal of Mass Spectrometry and Ion Physics International Journal of Mass Spectrometry and Ion Physics. 32, 15-26
POWIS, I. and DANBY, C. J., 1979. The Unimolecular Fragmentation of Energy Selected Acetone Ions: International Journal of Mass Spectrometry and Ion Physics International Journal of Mass Spectrometry and Ion Physics. 32, 27-33
POWIS, I. and DANBY, C. J., 1979. The Langevin Model in Statistical-Dynamical Dissociation Theory: Application to the System: Chemical Physics Letters Chemical Physics Letters. 65, 390-394
JOHNSON, K. M., POWIS, I. and DANBY, C. J., 1979. The Fragmentation of COCl: International Journal of Mass Spectrometry and Ion Physics International Journal of Mass Spectrometry and Ion Physics. 32, 1-14