PROTON SIMULATION OF DISPLACEMENT EFFECTS INDUCED IN METALS BY 14-MeV NEUTRONS.

Logan, C M

doi:10.2172/4654970

1972

DOI: 10.2172/4654970

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PROTON SIMULATION OF DISPLACEMENT EFFECTS INDUCED IN METALS BY 14-MeV NEUTRONS.

C M Logan¹

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1974

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TEM Investigation of 14-MeV Neutron Damage

Merkle

1974

Nuclear Technology

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14 MoV neutron damage has been investigated in gold by Beans of transmission electron microscopy (TEM). The sites of energetic displacement cascades are visible due to the presence of vacancy clusters formed by the collapse or rearrangement of vacancies vithin the depleted zones. We find in the 14 HeV n induced cascades a strong tendency towards subcascade formation. On the average 1.8 dusters are formed per cascade* Individual cascades vith m» many as 6 subcascades have been found. The number densities of clusters am well as the number densities of cascades are proportional to the fluestce. The-24 2 cross section for the formation of visible cascades is cr c • 3.3 x 10 cm. It can be shown that recoils from elastic neutron scattering events can account for only about 202 of the visible cascades. The cross saction corresponding to the balance of the observed cascades is, within experimental error* equal to the nonelastic neutron scattering cross section. This indicates that all nonelastic scattering events lead to the formation of a visible cascade. We find quantitative agreement with what is expected from heavy ion bombardments regarding the cross sections Involved, however, estimates of the average cascade energy in the 14 MeV neutron bombardments are somewhat higher than expected.

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TEM Investigation of 14-MeV Neutron Damage

Merkle

1974

Nuclear Technology

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PROTON SIMULATION OF DISPLACEMENT EFFECTS INDUCED IN METALS BY 14-MeV NEUTRONS.

Cited by 1 publication

References 1 publication

TEM Investigation of 14-MeV Neutron Damage

TEM Investigation of 14-MeV Neutron Damage

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