Measurement of the exclusive D(p,e(+)e(-))He-3 and D(p,gamma)He-3 reactions at 98 and 176 MeV

R Johansson; T.B. Bright; G. Fäldt; B. Höistad; E. Traneus; J.C.S Bacelar; H. Huisman; N. Kalantar-Nayestanaki; J.G. Messchendorp; M. Seip

doi:10.1016/S0375-9474(98)00490-4

Measurement of the exclusive D(p,e(+)e(-))He-3 and D(p,gamma)He-3 reactions at 98 and 176 MeV

R Johansson
, T.B. Bright
, G. Fäldt
, B. Höistad
, E. Traneus
, J.C.S Bacelar
, H. Huisman
, N. Kalantar-Nayestanaki
, J.G. Messchendorp
, M. Seip

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

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Abstract

A high resolution magnetic pair spectrometer for medium energy photons has been used for studies of the exclusive (p,e(+)e(-)) and (p, gamma) reactions on deuterium at 98 and 176 MeV. The (p, e(+)e(-)) cross sections, obtained at 40 degrees and 80 degrees, are compared with the corresponding data for the (p, gamma) reaction measured with the same apparatus. At small virtual photon masses the (p, e(+)e(-)) cross sections show significant enhancement over what is expected from model calculations, a behaviour which has earlier been observed also for the B-11(p, e(+)e(-))C-12 reaction. (C) 1998 Elsevier Science B.V.

Original language	English
Pages (from-to)	389-400
Number of pages	12
Journal	Nuclear Physics A
Volume	641
Issue number	4
DOIs	https://doi.org/10.1016/S0375-9474(98)00490-4
Publication status	Published - 1998

Keywords

H-2(p,gamma)
(p, e(+)e(-))He-3
E = 98
176 MeV
measured sigma(theta)
deduced enhancement in pair production
internal pair production
ratio of exclusive differential cross sections
high resolution magnetic pair spectrometer
RADIATIVE PROTON CAPTURE
INTERMEDIATE ENERGIES
DISCRETE STATES

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10.1016/S0375-9474(98)00490-4

1-s2.0-S0375947498004904-mainFinal publisher's version, 590 KBLicence: Taverne

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@article{737e4d6aab684ed0bb659f8cf49d60d4,

title = "Measurement of the exclusive D(p,e(+)e(-))He-3 and D(p,gamma)He-3 reactions at 98 and 176 MeV",

abstract = "A high resolution magnetic pair spectrometer for medium energy photons has been used for studies of the exclusive (p,e(+)e(-)) and (p, gamma) reactions on deuterium at 98 and 176 MeV. The (p, e(+)e(-)) cross sections, obtained at 40 degrees and 80 degrees, are compared with the corresponding data for the (p, gamma) reaction measured with the same apparatus. At small virtual photon masses the (p, e(+)e(-)) cross sections show significant enhancement over what is expected from model calculations, a behaviour which has earlier been observed also for the B-11(p, e(+)e(-))C-12 reaction. (C) 1998 Elsevier Science B.V.",

keywords = "H-2(p,gamma), (p, e(+)e(-))He-3, E = 98, 176 MeV, measured sigma(theta), deduced enhancement in pair production, internal pair production, ratio of exclusive differential cross sections, high resolution magnetic pair spectrometer, RADIATIVE PROTON CAPTURE, INTERMEDIATE ENERGIES, DISCRETE STATES",

author = "R Johansson and T.B. Bright and G. F{\"a}ldt and B. H{\"o}istad and E. Traneus and J.C.S Bacelar and H. Huisman and N. Kalantar-Nayestanaki and J.G. Messchendorp and M. Seip",

year = "1998",

doi = "10.1016/S0375-9474(98)00490-4",

language = "English",

volume = "641",

pages = "389--400",

journal = "Nuclear Physics A",

publisher = "ELSEVIER SCIENCE BV",

number = "4",

}

TY - JOUR

T1 - Measurement of the exclusive D(p,e(+)e(-))He-3 and D(p,gamma)He-3 reactions at 98 and 176 MeV

AU - Johansson, R

AU - Bright, T.B.

AU - Fäldt, G.

AU - Höistad, B.

AU - Traneus, E.

AU - Bacelar, J.C.S

AU - Huisman, H.

AU - Kalantar-Nayestanaki, N.

AU - Messchendorp, J.G.

AU - Seip, M.

PY - 1998

Y1 - 1998

N2 - A high resolution magnetic pair spectrometer for medium energy photons has been used for studies of the exclusive (p,e(+)e(-)) and (p, gamma) reactions on deuterium at 98 and 176 MeV. The (p, e(+)e(-)) cross sections, obtained at 40 degrees and 80 degrees, are compared with the corresponding data for the (p, gamma) reaction measured with the same apparatus. At small virtual photon masses the (p, e(+)e(-)) cross sections show significant enhancement over what is expected from model calculations, a behaviour which has earlier been observed also for the B-11(p, e(+)e(-))C-12 reaction. (C) 1998 Elsevier Science B.V.

AB - A high resolution magnetic pair spectrometer for medium energy photons has been used for studies of the exclusive (p,e(+)e(-)) and (p, gamma) reactions on deuterium at 98 and 176 MeV. The (p, e(+)e(-)) cross sections, obtained at 40 degrees and 80 degrees, are compared with the corresponding data for the (p, gamma) reaction measured with the same apparatus. At small virtual photon masses the (p, e(+)e(-)) cross sections show significant enhancement over what is expected from model calculations, a behaviour which has earlier been observed also for the B-11(p, e(+)e(-))C-12 reaction. (C) 1998 Elsevier Science B.V.

KW - H-2(p,gamma)

KW - (p, e(+)e(-))He-3

KW - E = 98

KW - 176 MeV

KW - measured sigma(theta)

KW - deduced enhancement in pair production

KW - internal pair production

KW - ratio of exclusive differential cross sections

KW - high resolution magnetic pair spectrometer

KW - RADIATIVE PROTON CAPTURE

KW - INTERMEDIATE ENERGIES

KW - DISCRETE STATES

U2 - 10.1016/S0375-9474(98)00490-4

DO - 10.1016/S0375-9474(98)00490-4

M3 - Article

VL - 641

SP - 389

EP - 400

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 4

ER -

Measurement of the exclusive D(p,e(+)e(-))He-3 and D(p,gamma)He-3 reactions at 98 and 176 MeV

Abstract

Keywords

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