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Cross Sections for High-Energy Gamma Transitions from MeV Neutron Capture in {sup 206}Pb

Abstract

Gamma-ray spectra from neutron capture in Pb (radiogenic lead) in the energy range 1.5 to 8.5 MeV were recorded using time-of-flight techniques. The spectrometer was a Nal (Tl) crystal, 20.8 cm long and 22.6 cm in diameter. The spectra are dominated by gamma transitions to levels with large single-particle strength, in agreement with predictions of semi-direct capture theories. The theories predict enhancements of the direct capture cross section by a factor of 10 - 15 in the region of the giant dipole resonance. The observed enhancement is about 50.
Publication Date:
Mar 15, 1970
Product Type:
Technical Report
Report Number:
AE-388
Resource Relation:
Other Information: 21 refs., 5 figs.
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; LEAD 206 TARGET; CAPTURE; NEUTRON REACTIONS; CROSS SECTIONS; TIME-OF-FLIGHT METHOD; GIANT RESONANCE
OSTI ID:
20961855
Research Organizations:
AB Atomenergi, Nykoeping (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
TRN: SE0708773
Availability:
Commercial reproduction prohibited; OSTI as DE20961855
Submitting Site:
SWDN
Size:
24 pages
Announcement Date:
Dec 29, 2007

Citation Formats

Bergqvist, I, Lundberg, B, and Nilsson, L. Cross Sections for High-Energy Gamma Transitions from MeV Neutron Capture in {sup 206}Pb. Sweden: N. p., 1970. Web.
Bergqvist, I, Lundberg, B, & Nilsson, L. Cross Sections for High-Energy Gamma Transitions from MeV Neutron Capture in {sup 206}Pb. Sweden.
Bergqvist, I, Lundberg, B, and Nilsson, L. 1970. "Cross Sections for High-Energy Gamma Transitions from MeV Neutron Capture in {sup 206}Pb." Sweden.
@misc{etde_20961855,
title = {Cross Sections for High-Energy Gamma Transitions from MeV Neutron Capture in {sup 206}Pb}
author = {Bergqvist, I, Lundberg, B, and Nilsson, L}
abstractNote = {Gamma-ray spectra from neutron capture in Pb (radiogenic lead) in the energy range 1.5 to 8.5 MeV were recorded using time-of-flight techniques. The spectrometer was a Nal (Tl) crystal, 20.8 cm long and 22.6 cm in diameter. The spectra are dominated by gamma transitions to levels with large single-particle strength, in agreement with predictions of semi-direct capture theories. The theories predict enhancements of the direct capture cross section by a factor of 10 - 15 in the region of the giant dipole resonance. The observed enhancement is about 50.}
place = {Sweden}
year = {1970}
month = {Mar}
}