Electron-Impact Ionization Cross Sections for Inner  L - and  M -Subshells of Atomic Targets at Relativistic Energies

Haque, A. K. F.; Maaza, M.; Haque, M. M.; Patoary, M. Atiqur R.; Uddin, Md. Azhar; Hossain, Md. Ismail; Mahbub, M. Selim; Basak, A. K.; Saha, Bidhan C.

doi:10.1016/bs.aiq.2017.02.002

Cited by 7 publications

(16 citation statements)

References 140 publications

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“…[40] and other theoretical calculations. Our results for both Ar and Cu are close to the results from the quantum calculations [28,31] as well as with other theoretical findings [4]. It is observed that the LSICS of Cu atom agree well with the experimental data and reasonably with other calculations for all subshells.…”

Section: Resultssupporting

confidence: 91%

“…Our present MVE model is compared with the previously available semi-empirical model DM of Deutsch et al [7], RPWBA of Scofield [28], PWBA of Khare and Wadehra [29], the quantum calculations SDWBA of Bote and Salvat [31] and SCADW of Pindzola [32,33]. Our calculated results from the XMUIBED [4], XMCN [4], MUIBED [23], XCVTS [26] and GKLV [20] models are also shown for comparison. [40] and other theoretical calculations.…”

Section: Resultsmentioning

confidence: 93%

“…The partial and the total cross-sections of the electron impact inner shell ionization are required in such diverse fields as atomic physics, plasma physics, astrophysics, radiation science, elemental analysis employing the Auger electron spectroscopy and electron probe microanalysis [1,2]. The last few decades saw a huge amount of theoretical and experimental studies to evaluate the electron impact inner shell ionization cross-sections (EIISICS) of atoms and molecules [3,4]. Most of the theoretical and experimental EIISICS studies are carried out for K-shell ionization [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] but these are very scarce for L-shell [20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Electron impact L-subshell and total L-shell ionization cross-sections of atoms (Z = 18–92)

et al. 2018

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We propose an extension of the modified Vaisburd and Evdokimov model (MVE) (2003 Russ. Phys. J. 46 1160) incorporating the relativistic effects to investigate the L1-, L2-and L3subshells as well as total L-shell ionization cross-sections (LSICS) of atomic targets with atomic numbers 18Z 92 for incident energies upto 1 GeV. We also revisited our earlier XMUIBED and XMCN model for individual L-subshell ionization cross-sections and MUIBED, GKLV and XCVTS for total LSICS for 28 atomic targets. We compare our new results from the MVE model with the available experimental data and other calculations including our previously proposed models.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Electron impact L-subshell and total L-shell ionization cross-sections of atoms (Z = 18–92)

et al. 2018

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“…A similar effect was also observed by Haque et al., where the SE yield was strongly dependent on the surface properties. [ 82 ]…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Proton Therapy Efficiency by Noble Metal Nanoparticles Is Driven by the Number and Chemical Activity of Surface Atoms

Zwiehoff

Johny

Behrends

et al. 2021

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Proton‐based radiotherapy is a modern technique for the treatment of solid tumors with significantly reduced side effects to adjacent tissues. Biocompatible nanoparticles (NPs) with high atomic numbers are known to serve as sensitizers and to enhance treatment efficacy, which is commonly believed to be attributed to the generation of reactive oxygen species (ROS). However, little systematic knowledge is available on how either physical effects due to secondary electron generation or the particle surface chemistry affect ROS production. Thereto, ligand‐free colloidal platinum (Pt) and gold (Au) NPs with well‐controlled particle size distributions and defined total surface area are proton‐irradiated. A fluorescence‐based assay is developed to monitor the formation of ROS using terephthalic acid as a cross‐effect‐free dye. The findings indicate that proton irradiation (PI)‐induced ROS formation sensitized by noble metal NPs is driven by the total available particle surface area rather than particle size or mass. Furthermore, a distinctive material effect with Pt being more active than Au is observed which clearly indicates that the chemical reactivity of the NP surface is a main contributor to ROS generation upon PI. These results pave the way towards an in‐depth understanding of the NP‐induced sensitizing effects upon PI and hence a well‐controlled enhanced therapy.

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“…Low SEY materials or surfaces are aimed for reduction of surface charging of spacecrafts and satellites [1,2] as well as to mitigate formation of electron clouds in particle accelerators. [3][4][5][6][7] The primary electron energy dependence of the secondary electron yield as well as the kinetic energy distribution of the emitted electrons are subject of intensive studies since decades for elemental material surfaces and compounds [7][8][9][10][11][12][13][14][15][16][17] to accommodate the progressively developing technology demands. For many applications a SEY maximum below unity is sufficient to avoid cascade multiplication of the impinging electrons.…”

Section: Introductionmentioning

confidence: 99%

Efficient Combination of Surface Texturing and Functional Coating for Very Low Secondary Electron Yield Surfaces and Rough Nonevaporable Getter Films

Himmerlich

Zanin

Taborelli

et al. 2022

Adv Materials Inter

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Electron-Impact Ionization Cross Sections for Inner L - and M -Subshells of Atomic Targets at Relativistic Energies

Cited by 7 publications

References 140 publications

Electron impact L-subshell and total L-shell ionization cross-sections of atoms (Z = 18–92)

Electron impact L-subshell and total L-shell ionization cross-sections of atoms (Z = 18–92)

Enhancement of Proton Therapy Efficiency by Noble Metal Nanoparticles Is Driven by the Number and Chemical Activity of Surface Atoms

Efficient Combination of Surface Texturing and Functional Coating for Very Low Secondary Electron Yield Surfaces and Rough Nonevaporable Getter Films

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