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Reaction /sup 140/Ce (e, e'p), (2)

Journal Article:

Abstract

An experiment was carried out to study the character of the resonance observed at 24.4 MeV in the /sup 140/Ce (..gamma.., p) /sup 139/La reaction. The (..gamma.., p/sub 0/ + p/sub 1/) cross section was measured at the angles of 54.7/sup 0/ and 125.3/sup 0/, at which the angle-dependent term of E1 becomes zero, for the energy range between 19 and 26 MeV. Existence of a peak due to the E2 resonance around 24.4 MeV was examined. The energy of incident electrons from a linear accelerator was changed between 20 and 26.7 MeV. The target was a Ce foil of 7.3 mg/cm/sup 2/ thick. The proton spectra due to the /sup 140/Ce (e, e' p) /sup 139/La reaction were measured with a broad range magnetic spectrometer. In the determined spectra of /sup 140/Ce (..gamma.., p/sub 0/+p/sub 1/) /sup 139/La, any remarkable peak, except one at 20.5 MeV, was not seen. From the observed spectra, the total cross section and the asymmetry factor due to interference were obtained as functions of energy. The values of the asymmetry factor were almost flat in the energy range between 19 and 26 MeV. The resonance at 24.4 MeV in the total cross section may  More>>
Authors:
Saito, T; Shoda, K [1] 
  1. Tohoku Univ., Sendai (Japan). Lab. of Nuclear Science
Publication Date:
Jun 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-272263; EDB-77-021843
Resource Relation:
Journal Name: Kakuriken Kenkyu Hokoku; (Japan); Journal Volume: 8:1
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CERIUM 140 TARGET; CROSS SECTIONS; KNOCK-OUT REACTIONS; ELECTRON REACTIONS; GIANT RESONANCE; LANTHANUM 139; PHOTONUCLEAR REACTIONS; PROTONS; BARYONS; CHARGED-PARTICLE REACTIONS; DIRECT REACTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; LANTHANUM ISOTOPES; LEPTON REACTIONS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; RARE EARTH ISOTOPES; RARE EARTH NUCLEI; RESONANCE; STABLE ISOTOPES; TARGETS; 651725* - Nuclear Properties & Reactions, A=90-149, Experimental- Nuclear Reactions & Scattering- (-1987)
OSTI ID:
7329715
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: KKYHB
Submitting Site:
INIS
Size:
Pages: 90-91
Announcement Date:

Journal Article:

Citation Formats

Saito, T, and Shoda, K. Reaction /sup 140/Ce (e, e'p), (2). Japan: N. p., 1975. Web.
Saito, T, & Shoda, K. Reaction /sup 140/Ce (e, e'p), (2). Japan.
Saito, T, and Shoda, K. 1975. "Reaction /sup 140/Ce (e, e'p), (2)." Japan.
@misc{etde_7329715,
title = {Reaction /sup 140/Ce (e, e'p), (2)}
author = {Saito, T, and Shoda, K}
abstractNote = {An experiment was carried out to study the character of the resonance observed at 24.4 MeV in the /sup 140/Ce (..gamma.., p) /sup 139/La reaction. The (..gamma.., p/sub 0/ + p/sub 1/) cross section was measured at the angles of 54.7/sup 0/ and 125.3/sup 0/, at which the angle-dependent term of E1 becomes zero, for the energy range between 19 and 26 MeV. Existence of a peak due to the E2 resonance around 24.4 MeV was examined. The energy of incident electrons from a linear accelerator was changed between 20 and 26.7 MeV. The target was a Ce foil of 7.3 mg/cm/sup 2/ thick. The proton spectra due to the /sup 140/Ce (e, e' p) /sup 139/La reaction were measured with a broad range magnetic spectrometer. In the determined spectra of /sup 140/Ce (..gamma.., p/sub 0/+p/sub 1/) /sup 139/La, any remarkable peak, except one at 20.5 MeV, was not seen. From the observed spectra, the total cross section and the asymmetry factor due to interference were obtained as functions of energy. The values of the asymmetry factor were almost flat in the energy range between 19 and 26 MeV. The resonance at 24.4 MeV in the total cross section may be due to the E1 resonance, and is not due to the E2.}
journal = {Kakuriken Kenkyu Hokoku; (Japan)}
volume = {8:1}
journal type = {AC}
place = {Japan}
year = {1975}
month = {Jun}
}