Relativistic calculations of M-shell photoionization and X-ray production cross-sections for Hg at 5.96 keV excitation energy

J.M. Sampaio; T. I. Madeira; F. Parente; P. Indelicato; J. P. Santos; J. P. Marques

doi:10.1016/j.radphyschem.2014.09.006

Relativistic calculations of M-shell photoionization and X-ray production cross-sections for Hg at 5.96 keV excitation energy

J.M. Sampaio, T. I. Madeira, F. Parente, P. Indelicato, J. P. Santos, J. P. Marques

Research output: Contribution to journal › Article › peer-review

Abstract

In this work we calculate photoionization and X-ray production cross-sections (XPCS) of M-shell vacancies in Hg at an incident photon energy of 5.96 keV (low energy X-rays of Fe-55 radioactive source) using the Dirac-Fock method. Calculations are performed in single configuration approach with the Breit interaction and some vacuum polarization corrections included in the self-consistent method. Higher-order retardation corrections, self-energy and other vacuum polarization effects were also included as perturbations. Fluorescence and Coster-Kronig yields necessary to derive XPCS were obtained in a previous work using the exact same approach. (C) 2014 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	36-39
Number of pages	4
Journal	Radiation Physics and Chemistry
Volume	107
DOIs	https://doi.org/10.1016/j.radphyschem.2014.09.006
Publication status	Published - Feb 2015

Keywords

Photoionization
X-ray production
Cross-sections
Ditac-Fock calculations
DIRAC-FOCK CALCULATIONS
FLUORESCENCE YIELDS
KEV PHOTONS
RADIATIONLESS TRANSITIONS
ELEMENTS
IONS
REGION
AU

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title = "Relativistic calculations of M-shell photoionization and X-ray production cross-sections for Hg at 5.96 keV excitation energy",

abstract = "In this work we calculate photoionization and X-ray production cross-sections (XPCS) of M-shell vacancies in Hg at an incident photon energy of 5.96 keV (low energy X-rays of Fe-55 radioactive source) using the Dirac-Fock method. Calculations are performed in single configuration approach with the Breit interaction and some vacuum polarization corrections included in the self-consistent method. Higher-order retardation corrections, self-energy and other vacuum polarization effects were also included as perturbations. Fluorescence and Coster-Kronig yields necessary to derive XPCS were obtained in a previous work using the exact same approach. (C) 2014 Elsevier Ltd. All rights reserved.",

keywords = "Photoionization, X-ray production, Cross-sections, Ditac-Fock calculations, DIRAC-FOCK CALCULATIONS, FLUORESCENCE YIELDS, KEV PHOTONS, RADIATIONLESS TRANSITIONS, ELEMENTS, IONS, REGION, AU",

author = "J.M. Sampaio and Madeira, {T. I.} and F. Parente and P. Indelicato and Santos, {J. P.} and Marques, {J. P.}",

note = "Sem PDF. This research was supported in part by Fundacao para a Ciencia e Tecnologia (FCT), Portugal, through Project nos. PEstOE/FIS/UI0303/2011 and PTDC/FIS/117606/2010, financed by the European Community Fund FEDER through the COMPETE. T.I.M. acknowledges the support of the FCT under Contract no. SFRH/BPD/69627/2010. Laboratoire Kastler Brossel is Unite Mixte de Recherche du CNRS, e de l' ENS et de l'UPMC No. 8552.",

year = "2015",

month = feb,

doi = "10.1016/j.radphyschem.2014.09.006",

language = "English",

volume = "107",

pages = "36--39",

journal = "Radiation Physics and Chemistry",

issn = "0969-806X",

publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

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TY - JOUR

T1 - Relativistic calculations of M-shell photoionization and X-ray production cross-sections for Hg at 5.96 keV excitation energy

AU - Sampaio, J.M.

AU - Madeira, T. I.

AU - Parente, F.

AU - Indelicato, P.

AU - Santos, J. P.

AU - Marques, J. P.

N1 - Sem PDF. This research was supported in part by Fundacao para a Ciencia e Tecnologia (FCT), Portugal, through Project nos. PEstOE/FIS/UI0303/2011 and PTDC/FIS/117606/2010, financed by the European Community Fund FEDER through the COMPETE. T.I.M. acknowledges the support of the FCT under Contract no. SFRH/BPD/69627/2010. Laboratoire Kastler Brossel is Unite Mixte de Recherche du CNRS, e de l' ENS et de l'UPMC No. 8552.

PY - 2015/2

Y1 - 2015/2

N2 - In this work we calculate photoionization and X-ray production cross-sections (XPCS) of M-shell vacancies in Hg at an incident photon energy of 5.96 keV (low energy X-rays of Fe-55 radioactive source) using the Dirac-Fock method. Calculations are performed in single configuration approach with the Breit interaction and some vacuum polarization corrections included in the self-consistent method. Higher-order retardation corrections, self-energy and other vacuum polarization effects were also included as perturbations. Fluorescence and Coster-Kronig yields necessary to derive XPCS were obtained in a previous work using the exact same approach. (C) 2014 Elsevier Ltd. All rights reserved.

AB - In this work we calculate photoionization and X-ray production cross-sections (XPCS) of M-shell vacancies in Hg at an incident photon energy of 5.96 keV (low energy X-rays of Fe-55 radioactive source) using the Dirac-Fock method. Calculations are performed in single configuration approach with the Breit interaction and some vacuum polarization corrections included in the self-consistent method. Higher-order retardation corrections, self-energy and other vacuum polarization effects were also included as perturbations. Fluorescence and Coster-Kronig yields necessary to derive XPCS were obtained in a previous work using the exact same approach. (C) 2014 Elsevier Ltd. All rights reserved.

KW - Photoionization

KW - X-ray production

KW - Cross-sections

KW - Ditac-Fock calculations

KW - DIRAC-FOCK CALCULATIONS

KW - FLUORESCENCE YIELDS

KW - KEV PHOTONS

KW - RADIATIONLESS TRANSITIONS

KW - ELEMENTS

KW - IONS

KW - REGION

KW - AU

U2 - 10.1016/j.radphyschem.2014.09.006

DO - 10.1016/j.radphyschem.2014.09.006

M3 - Article

SN - 0969-806X

VL - 107

SP - 36

EP - 39

JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

ER -

Relativistic calculations of M-shell photoionization and X-ray production cross-sections for Hg at 5.96 keV excitation energy

Abstract

Keywords

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