High precision gamma-ray energy measurements of fission products

doi:10.1016/0029-554X(79)90097-1

Nuclear Instruments and Methods

Volume 164, Issue 3, 1 September 1979, Pages 579-586

https://doi.org/10.1016/0029-554X(79)90097-1 Get rights and content

Abstract

Curved crystal spectrometers have been used to obtain high-precision γ-ray energies below 1 MeV of fission product lines arising from neutron capture in ²³⁵U and ²³⁹Pu produced in in-pile targets of ²³⁴U and ²³⁸U, respectively. Assignments of these γ-transitions to fission isotopes have been made.

References (11)

E. Moll
Nucl. Instr. and Meth.
(1975)
K.D. Wünsch
Nucl. Instr. and Meth.
(1978)
H. Lawin
Nucl. Instr. and Meth.
(1976)
J. Blachot et al.
At. Data Nucl. Data Tables
(1977)
H.G. Börner et al.

There are more references available in the full text version of this article.

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^∗: Present address: Division of Physics, National Research Council of Canada, Ottawa, K1A OR6, Ontario, Canada.

⁺: Present address: Kernforschungszentrum Karlsruhe, D-7500 Karlsruhe, Germany.

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High precision gamma-ray energy measurements of fission products

Abstract

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

At. Data Nucl. Data Tables