Photoelectron angular distributions

Tseng, H. K.; Pratt, R. H.; Yu, S.S.; Ron, Amos

doi:10.1103/physreva.17.1061

Cited by 96 publications

(40 citation statements)

References 36 publications

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“…Examples of non-dipole effects can be found in experiments on Ne 2p subshells [l41 and the Kr 3d subshell [6]. Further details of extensive evaluations of the coefficients B,, are being prepared for publication [57].…”

Section: Relativistic and Non-dipole Effectsmentioning

confidence: 99%

See 1 more Smart Citation

Angular Distributions of Photoelectrons and Non-Thermal Photoions From Atoms and Molecules

Dehmer

1978

J. Phys. Colloques

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RCsumC. -Durant ces dix dernikres annees, les distributions angulaires des photo-electrons ont kte exclusivement utilisees pour ktudier la dynamique des processus de photoionisation dans les atomes et les molkcules. Nous faisons le point, ici, sur les resultats les plus marquants survenus depuis la dernikre Conference Internationale d'il y a trois ans. De loin, les plus grands progres ont eu lieu pour les atomes, l'interst s'etant plus particulierement port6 sur les points suivants : amelioration de l'ordre zero (Hartree-Slater, Cooper-Zare), comprehension du paramttre d'asymetrie P(&), en considerant les correlations Clectroniques, les effets relativistes, les interactions de 1'Ctat final anisotropique. L'etude des gaz rares a bkneficik de l'ttroite coordination entre l'expkrience et la theorie, tandis que l'etude des atomes non spheriques est restee principalement theorique, mis a part les mesures rkcentes sur I'oxygkne atomique. Les etudes de distribution angulaire sur les molecules sont encore a un stade t r b preliminaire de dtveloppement. Ceci resulte du manque de mesures en fonction de la longueur d'onde, mises a part les experiences trks recentes, et l'absence de methodes theoriques pratiques et realistes. Le point sera donc fait sur ce travail recent, ainsi que sur une selection de travaux plus anciens concernant les molCcules et obtenus avec des raies de resonance. De plus, une nouvelle serie d'ktudes angulaires sur les molCcules -la distribution angulaire des ions non thermiques formes par photoionisation dissociative -fournissant des informations complCmentaires sur les mesures correspondantes avec des photoClectrons, sera presentee.Abstract. -During the last ten years, photoelectron angular distributions have been used extensively to study the dynamics of the photoionization process in atoms and molecules. Here we review some major advances in this body of work, with special emphasis on results emerging since the last Conference on VUV Radiation Physics three years ago. By far the greatest progress has occurred for atoms, where interest is focussed on improving our zero-order (Hartree-Slater, Cooper-Zare) understanding of the asymmetry parameter P(&), by considering electron correlations, relativistic effects, and anisotropic final-state interactions. The study of the rare gases has benefitted from extensive coordination between experiment and theory, whereas work on non-spherical atoms has been mainly theoretical, with the only measurements being performed very recently on atomic oxygen. Angular distribution studies on molecules are in a much earlier stage of development. Progress has been impeded by the lack of practical, realistic theoretical methods and wavelength-dependent measurements, both of which are becoming available only now. This recent work, together with selected topics from earlier resonance-line work on molecules will be reviewed. In addition, a new class of angle-dependent stud~es of molecules will be discussed -the angular distribution of non-thermal ions formed by dissociative ph...

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Section: Relativistic and Non-dipole Effectsmentioning

confidence: 99%

“…Again using the Dirac-Slater model, Pratt and coworkers [56,57] have demonstrated significant deviations from the non-relativistic dipole approximation for both low-and high-Z atoms. In light elements these effects are found in the keV range (and even below).…”

Section: Relativistic and Non-dipole Effectsmentioning

confidence: 99%

Angular Distributions of Photoelectrons and Non-Thermal Photoions From Atoms and Molecules

Dehmer

1978

J. Phys. Colloques

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“…In this work, Sauter's formula for the angular distribution of photoelectrons is used (Sauter, 1931). It can be written (Tseng et al, 1978): …”

Section: Photoelectric Effectmentioning

confidence: 99%

Monte-Carlo Simulation of Ionizing Radiation Tracks

Plante¹,

Cucinotta²

2011

Applications of Monte Carlo Methods in Biology, Medicine and Other Fields of Science

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“…These values were obtained from photoionization cross sections with the detailed balance principle. The photoionization cross sections and their angular dependences were calculated using the independent particle approximation [21][22][23] with an effective potential obtained with relativistic density functional theory [24] with an optimized effective potential and self-interaction correction method.…”

Section: Resultsmentioning

confidence: 99%