Alpha-proton elastic scattering cross sections for ERDA in the resonance region

P. Pusa (Corresponding Author), E. Rauhala, A. Gurbich, Arto Nurmela

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

We have investigated alpha–proton elastic scattering for He-ERDA. The broad maximum of the elastic scattering resonance around EHe=8.8 MeV is most important for hydrogen profiling with good sensitivity, since the cross section is more than hundredfold enhanced relative to Rutherford at the peak of the resonance. We present measurements covering the resonant energy region from 1.2 to 5.2 MeV of the inverse proton backscattering reaction at a laboratory backscattering angle of 129°. The present data and previous literature values found around the resonance were analysed by using the R-matrix theory. Comparison between the analysis of this work and an earlier work by Dodder et al. [Phys. Rev. C 15 (1977) 518] indicate the need of modified R-matrix parameters responsible for the shape of the resonance. Cross sections lower by 10–15% at the peak of the resonance and a new parameter set for calculating the cross sections for ERDA are suggested.
Original languageEnglish
Pages (from-to)686 - 689
Number of pages4
JournalNuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Volume222
Issue number3-4
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

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Elastic scattering
proton scattering
scattering cross sections
Protons
elastic scattering
Backscattering
cross sections
backscattering
matrix theory
coverings
Hydrogen
protons
sensitivity
hydrogen

Keywords

  • elastic Scattering ion beam analysis
  • p+alpha

Cite this

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title = "Alpha-proton elastic scattering cross sections for ERDA in the resonance region",
abstract = "We have investigated alpha–proton elastic scattering for He-ERDA. The broad maximum of the elastic scattering resonance around EHe=8.8 MeV is most important for hydrogen profiling with good sensitivity, since the cross section is more than hundredfold enhanced relative to Rutherford at the peak of the resonance. We present measurements covering the resonant energy region from 1.2 to 5.2 MeV of the inverse proton backscattering reaction at a laboratory backscattering angle of 129°. The present data and previous literature values found around the resonance were analysed by using the R-matrix theory. Comparison between the analysis of this work and an earlier work by Dodder et al. [Phys. Rev. C 15 (1977) 518] indicate the need of modified R-matrix parameters responsible for the shape of the resonance. Cross sections lower by 10–15{\%} at the peak of the resonance and a new parameter set for calculating the cross sections for ERDA are suggested.",
keywords = "elastic Scattering ion beam analysis, p+alpha",
author = "P. Pusa and E. Rauhala and A. Gurbich and Arto Nurmela",
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year = "2004",
doi = "10.1016/j.nimb.2004.02.036",
language = "English",
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pages = "686 -- 689",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
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number = "3-4",

}

Alpha-proton elastic scattering cross sections for ERDA in the resonance region. / Pusa, P. (Corresponding Author); Rauhala, E.; Gurbich, A.; Nurmela, Arto.

In: Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, Vol. 222, No. 3-4, 2004, p. 686 - 689.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Alpha-proton elastic scattering cross sections for ERDA in the resonance region

AU - Pusa, P.

AU - Rauhala, E.

AU - Gurbich, A.

AU - Nurmela, Arto

N1 - Project code: ZLET9124

PY - 2004

Y1 - 2004

N2 - We have investigated alpha–proton elastic scattering for He-ERDA. The broad maximum of the elastic scattering resonance around EHe=8.8 MeV is most important for hydrogen profiling with good sensitivity, since the cross section is more than hundredfold enhanced relative to Rutherford at the peak of the resonance. We present measurements covering the resonant energy region from 1.2 to 5.2 MeV of the inverse proton backscattering reaction at a laboratory backscattering angle of 129°. The present data and previous literature values found around the resonance were analysed by using the R-matrix theory. Comparison between the analysis of this work and an earlier work by Dodder et al. [Phys. Rev. C 15 (1977) 518] indicate the need of modified R-matrix parameters responsible for the shape of the resonance. Cross sections lower by 10–15% at the peak of the resonance and a new parameter set for calculating the cross sections for ERDA are suggested.

AB - We have investigated alpha–proton elastic scattering for He-ERDA. The broad maximum of the elastic scattering resonance around EHe=8.8 MeV is most important for hydrogen profiling with good sensitivity, since the cross section is more than hundredfold enhanced relative to Rutherford at the peak of the resonance. We present measurements covering the resonant energy region from 1.2 to 5.2 MeV of the inverse proton backscattering reaction at a laboratory backscattering angle of 129°. The present data and previous literature values found around the resonance were analysed by using the R-matrix theory. Comparison between the analysis of this work and an earlier work by Dodder et al. [Phys. Rev. C 15 (1977) 518] indicate the need of modified R-matrix parameters responsible for the shape of the resonance. Cross sections lower by 10–15% at the peak of the resonance and a new parameter set for calculating the cross sections for ERDA are suggested.

KW - elastic Scattering ion beam analysis

KW - p+alpha

U2 - 10.1016/j.nimb.2004.02.036

DO - 10.1016/j.nimb.2004.02.036

M3 - Article

VL - 222

SP - 686

EP - 689

JO - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

IS - 3-4

ER -