Length Change Measurements of Electron-irradiated Cadmium Sulfide PDF Download
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Author: Ronald Lawrence Bellows (CAPT, USA.)
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 68
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Book Description
Author: Ronald Lawrence Bellows (CAPT, USA.)
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 68
Get Book Here
Book Description
Author: Stephen Pierce Richard
Publisher:
ISBN:
Category :
Languages : en
Pages : 73
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Single crystal cadmium sulfide was bombarded with 275-935 keV electrons from a Van de Graaff accelerator and the change in length was observed at room (295K) and liquid nitrogen (77K) temperatures. The crystal showed a barely detectable change in length, ( -5.7=7.6) X 10 to the minus 22nd power per electron per sq cm, when bombarded with electrons below the cadmium displacement threshold at 295K. Above the cadmium threshold an initial contraction not predicted by the simple displacement theory of the order of ( -6.0 X 0.001) was observed. After the initial contraction, at 550 keV the length change was (+1.0=9.8) X 10 to the minus 23rd power per electron per sq cm, while at 755 and 935 keV, the length changes were (+4.6=1.5) X 10 to the minus 22nd power per electron per sq cm and ( -1.5=2.6) X 10 to the minus 22nd power per electron per sq cm, respectively. These length changes show the effect of an annealing stage which becomes dominant at large concentrations of displaced cadmium atoms. The 77K bombardments at 275 and 755 keV show contractions of ( -1.8=0.6) X 10 to the minus 22nd power per electron per sq cm and ( -2.9=1.3) X 10 to the minus 21st power per electron per sq cm, respectively, which are postulated as caused by the diffusion of interstitials through the lattice and the subsequent accumulation of vacancies. (Author).
Author: Ronald Lawrence Bellows
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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The relationship between radiation damage in a 'thin' platelet, high purity, single-crystal cadmium sulfide crystal and the change in the physical dimensions of the crystal was investigated. The sample was irradiated in a vacuum at 77K and 300K by a 150 keV electron beam just above the beam displacement threshold for the sulfur atom of 115 keV. The shrinkage and its ultimate saturation suggest the diffusion of sulfur interstitials from the crystal with an accompanying accumulation of sulfur vacancies in the lattice. The difference in the results at 77K and at 300K indicate an annealing of the damage somewhere between the two temperatures. (Author).
Author: Stephen Pierce Richard (LT, USAF.)
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 64
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Category : Science
Languages : en
Pages : 1776
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Category : Aeronautics
Languages : en
Pages : 260
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Category : Industrial arts
Languages : en
Pages : 1118
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Category : Science
Languages : en
Pages : 684
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Category : Government publications
Languages : en
Pages : 760
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Category : Technology
Languages : en
Pages : 1698
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