Backscattered electron emission after proton impact on carbon and gold films: Experiments and simulations

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

This work aims at measuring the proton induced secondary electron energy spectra from nanometer thin films. Backscattered electron energy spectra were measured within an energy range from 0 to 600 eV using a Retarding Field Analyser (RFA). This paper presents energy spectra obtained for proton (0.5 MeV; 1 MeV; 1.5 MeV; 2 MeV) irradiation of thin carbon films (50 and 100 nm thick) and thin gold film (200 nm). These experimental spectra were compared with Monte Carlo simulations based on TRAX code and Geant4 simulation toolkit. Good agreement between experimental, TRAX and Geant4 results were observed for the carbon target. For the gold target, we report major differences between both Monte Carlo environments. Limitation of Geant4 models for low energy electron emission was highlighted. On the contrary, TRAX simulations present encouraging results for the modeling of low-energy electron emission from gold target.
langue originaleAnglais
Pages (de - à)8-17
Nombre de pages10
journalNuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms
Volume401
Les DOIs
étatPublié - 15 juin 2017

Empreinte digitale

proton impact
Electron emission
electron emission
Protons
energy spectra
Gold
gold
Carbon
carbon
electron energy
Thin films
protons
Electrons
simulation
Experiments
Carbon films
energy
retarding
Irradiation
irradiation

Citer ceci

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title = "Backscattered electron emission after proton impact on carbon and gold films: Experiments and simulations",
abstract = "This work aims at measuring the proton induced secondary electron energy spectra from nanometer thin films. Backscattered electron energy spectra were measured within an energy range from 0 to 600 eV using a Retarding Field Analyser (RFA). This paper presents energy spectra obtained for proton (0.5 MeV; 1 MeV; 1.5 MeV; 2 MeV) irradiation of thin carbon films (50 and 100 nm thick) and thin gold film (200 nm). These experimental spectra were compared with Monte Carlo simulations based on TRAX code and Geant4 simulation toolkit. Good agreement between experimental, TRAX and Geant4 results were observed for the carbon target. For the gold target, we report major differences between both Monte Carlo environments. Limitation of Geant4 models for low energy electron emission was highlighted. On the contrary, TRAX simulations present encouraging results for the modeling of low-energy electron emission from gold target.",
keywords = "Proton beam, Gold target, Carbon target, Electron emission, Low-energy electron, Geant4, TRAX, Monte Carlo, Low-energy electron",
author = "F{\'e}licien Hespeels and Anne-Catherine Heuskin and E Scifoni and M Kraemer and St{\'e}phane Lucas",
year = "2017",
month = "6",
day = "15",
doi = "10.1016/j.nimb.2017.04.032",
language = "English",
volume = "401",
pages = "8--17",
journal = "Nuclear Instruments and Methods in Physical Research B",
issn = "0168-583X",
publisher = "Elsevier",

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TY - JOUR

T1 - Backscattered electron emission after proton impact on carbon and gold films

T2 - Experiments and simulations

AU - Hespeels, Félicien

AU - Heuskin, Anne-Catherine

AU - Scifoni, E

AU - Kraemer, M

AU - Lucas, Stéphane

PY - 2017/6/15

Y1 - 2017/6/15

N2 - This work aims at measuring the proton induced secondary electron energy spectra from nanometer thin films. Backscattered electron energy spectra were measured within an energy range from 0 to 600 eV using a Retarding Field Analyser (RFA). This paper presents energy spectra obtained for proton (0.5 MeV; 1 MeV; 1.5 MeV; 2 MeV) irradiation of thin carbon films (50 and 100 nm thick) and thin gold film (200 nm). These experimental spectra were compared with Monte Carlo simulations based on TRAX code and Geant4 simulation toolkit. Good agreement between experimental, TRAX and Geant4 results were observed for the carbon target. For the gold target, we report major differences between both Monte Carlo environments. Limitation of Geant4 models for low energy electron emission was highlighted. On the contrary, TRAX simulations present encouraging results for the modeling of low-energy electron emission from gold target.

AB - This work aims at measuring the proton induced secondary electron energy spectra from nanometer thin films. Backscattered electron energy spectra were measured within an energy range from 0 to 600 eV using a Retarding Field Analyser (RFA). This paper presents energy spectra obtained for proton (0.5 MeV; 1 MeV; 1.5 MeV; 2 MeV) irradiation of thin carbon films (50 and 100 nm thick) and thin gold film (200 nm). These experimental spectra were compared with Monte Carlo simulations based on TRAX code and Geant4 simulation toolkit. Good agreement between experimental, TRAX and Geant4 results were observed for the carbon target. For the gold target, we report major differences between both Monte Carlo environments. Limitation of Geant4 models for low energy electron emission was highlighted. On the contrary, TRAX simulations present encouraging results for the modeling of low-energy electron emission from gold target.

KW - Proton beam

KW - Gold target

KW - Carbon target

KW - Electron emission

KW - Low-energy electron

KW - Geant4

KW - TRAX

KW - Monte Carlo

KW - Low-energy electron

UR - http://www.scopus.com/inward/record.url?scp=85017533867&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2017.04.032

DO - 10.1016/j.nimb.2017.04.032

M3 - Article

VL - 401

SP - 8

EP - 17

JO - Nuclear Instruments and Methods in Physical Research B

JF - Nuclear Instruments and Methods in Physical Research B

SN - 0168-583X

ER -