James Williams

Emeritus Professor, MSc DipEd NE, PhD DSc ANU, DSc W.Aust., FAmIP, FAIP, FAA, FInstP, CPhys, SMIEEE

  • The University of Western Australia (M013), 35 Stirling Highway, Room 4.16, Physics Building, Perth campus

    6009 Perth

    Australia

  • 2876 Citations
  • 26 h-Index
1959 …2019
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Research Output 1959 2019

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Conference paper
2015
2 Citations (Scopus)

Spin polarized low-energy positron source

Petrov, V., Samarin, S., Sudarshan, K., Pravica, L., Guagliardo, P. & Williams, J., 2015, Journal of Physics: Conference Series. Institute of Physics, Vol. 618. p. 012043

Research output: Chapter in Book/Conference paperConference paper

Open Access
positrons
polarization
energy
electron emission
asymmetry
1 Citation (Scopus)

Spin-polarized single- and two-electron spectroscopies at various kinematics

Samarin, S., Tan, M., Artamonov, O. M., Baraban, A. P., Guagliardo, P. & Williams, J., 2015, Journal of Physics: Conference Series. Lorenzo Ugo Ancarani: Institute of Physics, Vol. 601. p. 1-10

Research output: Chapter in Book/Conference paperConference paper

Open Access
electron spectroscopy
kinematics
asymmetry
ferromagnetic films
polarization
2014
1 Citation (Scopus)

Positron reemission from clean and LiF coated W(100): Effect of oxygen exposure

Sudarshan, S., Samarin, S., Wilkie, P. J., Guagliardo, P., Petrov, V. & Williams, J., 2014, Positron reemission from clean and LiF coated W(100): Effect of oxygen exposure. Journal of Physics: Conference Series: Institute of Physics, Vol. 505. p. 012004

Research output: Chapter in Book/Conference paperConference paper

Open Access
positrons
oxygen
causes
energy
2013

Positron Annihilation Studies of Mesoporous Silica MCM-41

Williams, J., Guagliardo, P., Sudarshan, K., Ranganathaiah, C., Koutsantonis, G., Hondow, N. & Samarin, S., 2013, Journal of Physics: Conference Series. United Kingdom: IOP Publishing, Vol. 443. p. 1-4

Research output: Chapter in Book/Conference paperConference paper

Open Access
1 Citation (Scopus)

Positron annihilation study of Cs-deficient pollucite

Guagliardo, P., Vance, E. R., Sudarshan, K., Davis, J., Williams, J., Renganathaiah, C. & Samarin, S., 2013, 16th International Conferenceon Positron Annihilation. United Kingdom: IOP Publishing, Vol. 443. p. 012015 (1-4)

Research output: Chapter in Book/Conference paperConference paper

Open Access
2 Citations (Scopus)

Positron Re-emission Studies from W (100)

Sudarshan, K., Petrov, V., Samarin, S., Guagliardo, P., Weiss, A. H. & Williams, J., 2013, 16th International Conferenceon Positron Annihilation. United Kingdom: IOP Publishing, Vol. 443. p. 012070 (1-4)

Research output: Chapter in Book/Conference paperConference paper

Open Access
2012

Spin-related effects in scattering of spin-polarized low-energy electrons from magnetic and nonmagnetic surfaces

Samarin, S., Williams, J., Artamonov, O. & Suvorova, A., 2012, JOURNAL OF PHYSICS: CONFERENCE SERIES. United Kingdom: Institute of Physics, Vol. 388. p. 1

Research output: Chapter in Book/Conference paperConference paper

2011

Application of positron annihilation lifetime spectroscopy to nano-characteristion of polymer-modified mortars

Guagliardo, P., Klemm, A. J., Samarin, S. & Williams, J., 2011, WIT Transactions on Engineering Sciences: Materials Characterisation V. United Kingdom: WIT Press, Vol. 72. p. 3-14

Research output: Chapter in Book/Conference paperConference paper

4 Citations (Scopus)

A study of porosity of synthetic polymer nanoparticles using PALS

Pham, B., Guagliardo, P., Williams, J., Samarin, S. & Smith, S. V., 2011, Journal of Physics: Conference Series 264. UK: Institute of Physics, Vol. 262. 4 p.

Research output: Chapter in Book/Conference paperConference paper

Characterisation of metakaolin-based geopolymers using beam-based and conventional PALS

Guagliardo, P., Roberts, J., Vance, E. R., Weed, R., Sergeant, A., Howie, A., Wilkie, P., Went, M., Sullivan, J., Williams, J., Samarin, S. & Buckman, S., 2011, Journal of Physics: Conference Series. UK: Institute of Physics, Vol. 262. p. 4pp

Research output: Chapter in Book/Conference paperConference paper

3 Citations (Scopus)

Clay particles - Potential of positron annihilation lifetime spectroscopy (PALS) for studying interlayer spacing

Fong, N., Guagliardo, P., Williams, J., Musumeci, A., Martin, D. & Smith, S. V., 2011, Journal of Physics: Conference Series. United Kingdom: Institute of Physics, Vol. 262. p. 4pp

Research output: Chapter in Book/Conference paperConference paper

2 Citations (Scopus)

Spin-orbit effects in the (e,2e) scattering from a W(110) surface and thin gold layer

Samarin, S., Artamonov, O. M., Sergeant, A., Pravica, L., Cvejanovic, D., Wilkie, P. J., Guagliardo, P., Suvorova, A. & Williams, J., 2011, 17th International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces. UK: IOP Publishing, Vol. 288. p. 1-8 (Journal of Physics: Conference Series).

Research output: Chapter in Book/Conference paperConference paper

2010
1 Citation (Scopus)

Electron correlations and spin effects activated by excitation of an inner 3d electron in zinc

Cvejanovic, D., Napier, S., Williams, J. & Pravica, L., 2010, Journal of Physics: Conference Series. Martin, N. L. S. & DeHarak, B. A. (eds.). Lexington, Kentucky, USA ed. Bristol, UK: IOP Publishing, Vol. 212. p. 6 pp

Research output: Chapter in Book/Conference paperConference paper

4 Citations (Scopus)

Spin-polarised Stokes parameters of open and closed shell transitions and their resonances in zinc atoms.

Williams, J., Pravica, L., Cvejanovic, D., Napier, S., Samarin, S. & Piwinski, M., 2010, Journal of Physics: Conference Series. Ueda, K. (ed.). Matsushima, Japan ed. Bristol, UK: IOP Publishing, Vol. 235. p. 12 pp

Research output: Chapter in Book/Conference paperConference paper

2009

Post collision interaction effects in the excitation of zinc atoms

Cvejanovic, D., Napier, S., Williams, J., Pravica, L., Samarin, S., Sergeant, A., Guagliardo, P. & Wilkie, P., 2009, Journal of Physics: Conference Series 185 (2009). Williams, J. F. (ed.). Perth Western Australia ed. Perth Western Australia: IOP Publishing, Vol. 185. p. 4 pp

Research output: Chapter in Book/Conference paperConference paper

Scattering asymmetries in excitation of zinc by spin polarized electrons

Cvejanovic, D., Napier, S., Williams, J. & Pravica, L., 2009, Journal of Physics: Conference Series 194 (2009). Williams, J. F. (ed.). Perth Western Australia ed. 10.1088/1742-6596/194/4/042019: IOP Publishing, Vol. 194. p. online

Research output: Chapter in Book/Conference paperConference paper

1 Citation (Scopus)

Spin dependence in resonance electron scattering from zinc atoms

Napier, S., Cvejanovic, D., Williams, J., Pravica, L., Samarin, S., Sergeant, A., Guagliardo, P. & Wilkie, P., 2009, Journal of Physics: Conference Series 185 (2009). Williams, J. F. (ed.). Perth Western Australia ed. Perth Western Australia: IOP Publishing, Vol. 185. p. 4 pp

Research output: Chapter in Book/Conference paperConference paper

2008
5 Citations (Scopus)

Low-energy spin-polarized two-electron spectroscopy: a powerful tool for studying exchange correlation and spin-orbit interaction on surfaces

Samarin, S., Artamonov, O. M., Sergeant, A., Kirschner, J. & Williams, J., 2008, Journal of Physics: Conference Series. Mucklow, J. (ed.). Stockholm, Sweden ed. Bristol, England: IOP Publishing, Vol. 100. p. 4 pp

Research output: Chapter in Book/Conference paperConference paper

2006

Low Energy Spin-polarized Electron-pair (e,2e)-in-Reflection From Various Surfaces

Williams, J., Samarin, S., Sergeant, A., Suvorova, A. A. & Artamonov, O. M., 2006, Photonic, Electronic and Atomic Collisions: Proceedings of the XXIV international Conference. Fainstein, P. D. (ed.). Rosario, Argentina ed. 5 Toh Tuck Link, Singapore: World Scientific Publishing, Vol. 24. p. 666-673

Research output: Chapter in Book/Conference paperConference paper

Spin and Electron Correlation Effects in Excitation of 3d Metal Atoms

Pravica, L., Cvejanovic, D., Napier, S. & Williams, J., 2006, THE PHYSICS OF IONIZED GASES: 23rd Summer School and International Symposium on the Physics of Ionized Gases. Hadzievski, L., Marinkovic, B. P. & Simonovic, N. S. (eds.). National Park Kopaonik, Serbia ed. American Institute of Physics, Suite 1 NO, 2 Huntington Quadrangle, Melville, New York 11747: American Institute of Physics, Vol. 876. p. 72-79

Research output: Chapter in Book/Conference paperConference paper

Spin Up-Down Asymmetry in the Excitation of Kr 5p' [3/2]2 by Polarized Electrons

Yu, D., Cvejanovic, D., Williams, J., Pravica, L., Srivastava, R., Strauffer, A., Hayes, P. A. & Napier, S., 2006, Proceedings of the International Symposium on (e,2e) Double Photoionization and Related Topics. Lahmam-Bennani, A. & Lohmann, B. (eds.). Buenos Aires, Argentina ed. American Institute of Physics, Suite 1NO, 2 Huntington Quadrangle, Melville, New York 11747: American Institute of Physics, Vol. 811. p. 185-190

Research output: Chapter in Book/Conference paperConference paper

2005

Core effect studies of open and closed inner-shell states of Zinc

Pravica, L., Cvejanovic, D., Napier, S. & Williams, J., 2005, XXIV Internation Conference on Photonic, Electronic and Atomic Collisions. Rosario, Argentina ed. http://www.icpeac2005.cnea.gov.ar/contacts.shtml: N/A, Vol. N/A. p. Mo033

Research output: Chapter in Book/Conference paperConference paper

Differential cross section for excitation to the 3s, 3p, and 3d states of atomic hydrogen by electron impact at energies of 16.5, 19.6 and 54eV

Williams, J., Bartlett, P. L., Stelbovics, A. T. & Bray, I., 2005, XXIV Internation Conference on Photonic, Electronic and Atomic Collisions. Rosario, Argentina ed. http://www.icpeac2005.cnea.gov.ar/contacts.shtml: N/A, Vol. N/A. p. Mo033

Research output: Chapter in Book/Conference paperConference paper

Electron Impact excitation of zinc atom

Cvejanovic, D., Napier, S., Pravica, L. & Williams, J., 2005, XXIV Internation Conference on Photonic, Electronic and Atomic Collisions. Rosario, Argentina ed. http://www.icpeac2005.cnea.gov.ar/contacts.shtml: N/A, Vol. N/A. p. Fr049

Research output: Chapter in Book/Conference paperConference paper

Low energy spin-polarized (e,2e) - in reflection from various surfaces

Williams, J., Samarin, S. & Sergeant, A., 2005, XXIV Internation Conference on Photonic, Electronic and Atomic Collisions. Rosario, Argentina ed. http://www.icpeac2005.cnea.gov.ar/contacts.shtml: N/A, Vol. N/A. p. Tu124

Research output: Chapter in Book/Conference paperConference paper

Thin Ferromagnetic layers grown on W(110) studied thourgh low-energy spin-polarised coincidence (e,2e) spectroscopy

Williams, J., Sergeant, A. & Samarin, S., 2005, XXIV Internation Conference on Photonic, Electronic and Atomic Collisions. Rosario, Argentina ed. http://www.icpeac2005.cnea.gov.ar/contacts.shtml: N/A, Vol. N/A. p. M0119

Research output: Chapter in Book/Conference paperConference paper

2003

Visualization of Cascade Effects on Integrated Stokes Parameters Using a Pulsed Polarized Electron Beam Technique

Yu, D. H. & Williams, J., 2003, Correlation and Polarization in Photonic, Electronic, and Atomic Collisions. Hanne, G. F., Malegat, L. & Schmidt-Bocking, H. (eds.). Konigstein, Germany ed. USA: American Institute of Physics, Vol. N/A. p. 188-192

Research output: Chapter in Book/Conference paperConference paper

1999

Spin-effects in the ionisation-with-excitation of krypton atoms by polarised electrons

Yu, D. H., Hayes, P. A., Chen, X. J. & Williams, J., 1999, Proceedings of the International Conference on Coincidence Spectroscopy. Langlois, J., Vien, G. N., Pochat, A., Rioual, S., Robaux, O., Rouvellou, B. & Tweed, R. J. (eds.). Brest, France ed. France: EDP Sciences, Vol. 9. p. 13-16

Research output: Chapter in Book/Conference paperConference paper

1998

(e,2e) measurements from threshold to intermediate energies

Van Boeyen, R. W. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 54

Research output: Chapter in Book/Conference paperConference paper

A triple coincidence experiment to investigate electron recapture near the Auger threshold

Waterhouse, D. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 84

Research output: Chapter in Book/Conference paperConference paper

Auger transitions and electron momentum densities of a simple organic molecule: Methane (CH4)

Waterhouse, D., Chen, X. J., Paap, A. J. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 390

Research output: Chapter in Book/Conference paperConference paper

Complete determination of the 31D state of helium

Mikosza, A. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 66

Research output: Chapter in Book/Conference paperConference paper

Electron impact excitation of the 2P state of atomic hydrogen

Williams, J. & Mikosza, A., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 69

Research output: Chapter in Book/Conference paperConference paper

Electron impact ionisation measurements of argon and helium using a double toroidal (e,2e) analyser

Barton, D. P., Maslen, M. J. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 318

Research output: Chapter in Book/Conference paperConference paper

Excitation of Ne 4d, 5s and 6s States by Polarized Electrons

Hayes, P. A., Yu, D. H. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 346

Research output: Chapter in Book/Conference paperConference paper

293 Citations (Scopus)

Measurements of scattering parameters of the He(33D) state

Rose, H. K., Mikosza, A. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 53

Research output: Chapter in Book/Conference paperConference paper

Multi-coincidence characterisation of an atomic D state

Mikosza, A., Williams, J. & Rose, H. K., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 362

Research output: Chapter in Book/Conference paperConference paper

Spin-dependent Interactions in the Excitation of Noble Gases by Polarized Electrons

Yu, D. H., Hayes, P. A. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 78

Research output: Chapter in Book/Conference paperConference paper

Time dependent approach to s-wave positron-hydrogen scattering

Riste, N., Wang, J., Stelbovics, A. T. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 372

Research output: Chapter in Book/Conference paperConference paper

Wavelet analysis of (e,2e) electron correlations in argon

Maslen, M. J., Barton, D. P. & Williams, J., 1998, 13th National Congress of the Australian Institute of Physics. Perth, Western Australia ed. Perth, Western Australia: Australian Institute of Physics, Vol. N/A. p. 319

Research output: Chapter in Book/Conference paperConference paper

1997

An invariant graphical method for setting up the close-coupling equations

Wang, J., Stelbovics, A. T. & Williams, J., 1997, Twentieth International Conference on The Physics of Electronic and Atomic Collisions. Aumayr, F., Betz, G. & Winter, H. P. (eds.). Vienna, Austria ed. Austria: Institut für Allgemeine Physik, TU Wien and Austrian Bundesministerium für Wissenschaft und Verkehr, Vol. II. p. MO 084

Research output: Chapter in Book/Conference paperConference paper

Measurements of the singlet-triplet mix ratio in He(41,3F)

Mikosza, A., Wang, J., Rose, H. K. & Williams, J., 1997, Twentieth International Conference on The Physics of Electronic and Atomic Collisions. Aumayr, F., Betz, G. & Winter, H. P. (eds.). Vienna, Austria ed. Austria: Institut für Allgemeine Physik, Vol. II. p. MO 094

Research output: Chapter in Book/Conference paperConference paper

What is the pressure at the collision site?

Wang, J., Wu, H. Y., Williams, J. & Mikosza, A., 1997, Twentieth International Conference on The Physics of Electronic and Atomic Collisions. Aumayr, F., Betz, G. & Winter, H. P. (eds.). Vienna, Austria ed. Austria: Institut für Allgemeine Physik, TU Wien and Austrian Bundesministerium für Wissenschaft und Verkehr, Vol. 1. p. TH 044

Research output: Chapter in Book/Conference paperConference paper

1995

(e,2e) measurements in the perpendicular plane

Van Boeyen, R. W. & Williams, J., 1995, Nineteenth International Conference on the Physics of Electronic and Atomic Collisions. London, Ontario, Canada: University of Western Ontario, p. 504

Research output: Chapter in Book/Conference paperConference paper

Characterisation of a double electron energy analyser to measure correlations in the auger spectra of argon

Barton, D. P., Flexman, J. H. & Williams, J., 1995, Nineteenth International Conference on the Physics of Electronic and Atomic Collisions. London, Ontario, Canada: The University of Western Ontario, p. 456

Research output: Chapter in Book/Conference paperConference paper

Measurement of the integrated Stokes parameters for light emitted from Ne 2p5 3p states excited by polarised electrons

Furst, J. E., Yu, D. H., D'Souza, C. M., Hayes, P. & Williams, J., 1995, International Conference on the Physics of Electronic and Atomic Collisions. London, Ontario, Canada: University of Western Ontario, p. 221

Research output: Chapter in Book/Conference paperConference paper

Monte Carlo investigation of radiation trapping effects

Wang, J., Carter, C. J., Williams, J., Wu, H. Y. & Mikosza, A., 1995, Nineteenth International Conference on the Physics of Electronic and Atomic Collisions. London, Ontario, Canada: University of Western Ontario, p. 236

Research output: Chapter in Book/Conference paperConference paper

New measurements of triplet coincidences in He(31D)

Mikosza, A., Williams, J., Flexman, J. H., Hippler, R., Wang, J. & Smith, P. A., 1995, Australian-American Advanced Workshop on Atomic and Molecular Physics. Canberra: ANU E Press, p. 35

Research output: Chapter in Book/Conference paperConference paper

Partial cross sections for excitation of He(31D) states by electron impact.

Mikosza, A., Hippler, R., Wang, J. & Williams, J., 1995, Nineteenth International Conference on the Physics of Electronic and Atomic Collisions. London, Ontario, Canada: University of Western Ontario, p. 236

Research output: Chapter in Book/Conference paperConference paper

Partial cross sections of He(31D) from cascade photon decay

Mikosza, A., Hippler, R., Wang, J. & Williams, J., 1995, Australian-American Advanced Workshop on Atomic and Molecular Physics. Canberra: ANU E Press, p. 27

Research output: Chapter in Book/Conference paperConference paper