Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets

S. P. Møller; E. Uggerhøj; H. Bluhme; H. Knudsen; U. Mikkelsen; K. Paludan; E. Morenzoni

doi:10.1016/S0168-583X(96)00774-4

Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets

S. P. Møller^*, E. Uggerhøj, H. Bluhme, H. Knudsen, U. Mikkelsen, K. Paludan, E. Morenzoni

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

14 Citationer (Scopus)

Abstract

The first direct measurements of antiproton stopping powers around the stopping power maximum are presented. The LEAR antiproton-beam of 5.9 MeV is degraded to 50-700 keV, and the energy-loss is found by measuring the antiproton velocity before and after the target. The antiproton stopping powers of Si and Au are found to be reduced by 30 and 40% near the electronic stopping power maximum as compared to the equivalent proton stopping power. The Barkas effect, that is the stopping power difference between protons and antiprotons, is extracted and compared to theoretical estimates.

Originalsprog	Engelsk
Tidsskrift	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Vol/bind	122
Nummer	1
Sider (fra-til)	162-166
Antal sider	5
ISSN	0168-583X
DOI	https://doi.org/10.1016/S0168-583X(96)00774-4
Status	Udgivet - jan. 1997

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Møller, S. P., Uggerhøj, E., Bluhme, H., Knudsen, H., Mikkelsen, U., Paludan, K., & Morenzoni, E. (1997). Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 122(1), 162-166. https://doi.org/10.1016/S0168-583X(96)00774-4

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title = "Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets",

abstract = "The first direct measurements of antiproton stopping powers around the stopping power maximum are presented. The LEAR antiproton-beam of 5.9 MeV is degraded to 50-700 keV, and the energy-loss is found by measuring the antiproton velocity before and after the target. The antiproton stopping powers of Si and Au are found to be reduced by 30 and 40% near the electronic stopping power maximum as compared to the equivalent proton stopping power. The Barkas effect, that is the stopping power difference between protons and antiprotons, is extracted and compared to theoretical estimates.",

author = "M{\o}ller, {S. P.} and E. Uggerh{\o}j and H. Bluhme and H. Knudsen and U. Mikkelsen and K. Paludan and E. Morenzoni",

year = "1997",

month = jan,

doi = "10.1016/S0168-583X(96)00774-4",

language = "English",

volume = "122",

pages = "162--166",

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Møller, SP, Uggerhøj, E, Bluhme, H, Knudsen, H, Mikkelsen, U, Paludan, K & Morenzoni, E 1997, 'Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, bind 122, nr. 1, s. 162-166. https://doi.org/10.1016/S0168-583X(96)00774-4

Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets. / Møller, S. P.; Uggerhøj, E.; Bluhme, H. et al.
I: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Bind 122, Nr. 1, 01.1997, s. 162-166.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

TY - JOUR

T1 - Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets

AU - Møller, S. P.

AU - Uggerhøj, E.

AU - Bluhme, H.

AU - Knudsen, H.

AU - Mikkelsen, U.

AU - Paludan, K.

AU - Morenzoni, E.

PY - 1997/1

Y1 - 1997/1

N2 - The first direct measurements of antiproton stopping powers around the stopping power maximum are presented. The LEAR antiproton-beam of 5.9 MeV is degraded to 50-700 keV, and the energy-loss is found by measuring the antiproton velocity before and after the target. The antiproton stopping powers of Si and Au are found to be reduced by 30 and 40% near the electronic stopping power maximum as compared to the equivalent proton stopping power. The Barkas effect, that is the stopping power difference between protons and antiprotons, is extracted and compared to theoretical estimates.

AB - The first direct measurements of antiproton stopping powers around the stopping power maximum are presented. The LEAR antiproton-beam of 5.9 MeV is degraded to 50-700 keV, and the energy-loss is found by measuring the antiproton velocity before and after the target. The antiproton stopping powers of Si and Au are found to be reduced by 30 and 40% near the electronic stopping power maximum as compared to the equivalent proton stopping power. The Barkas effect, that is the stopping power difference between protons and antiprotons, is extracted and compared to theoretical estimates.

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U2 - 10.1016/S0168-583X(96)00774-4

DO - 10.1016/S0168-583X(96)00774-4

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VL - 122

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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

IS - 1

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Measurement of the Barkas effect around the stopping-power maximum for light and heavy targets

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