Author: Ronald Lawrence Bellows (CAPT, USA.)
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 68
Book Description
Length Change Measurements of Electron-irradiated Cadmium Sulfide
Author: Ronald Lawrence Bellows (CAPT, USA.)
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 68
Book Description
Length Change Measurements of Electron Irradiated Cadmium Sulfide in the Energy Range 275-935 Kev
Author: Stephen Pierce Richard
Publisher:
ISBN:
Category :
Languages : en
Pages : 73
Book Description
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).
Publisher:
ISBN:
Category :
Languages : en
Pages : 73
Book Description
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).
Length Change Measurements of Electronirradiated Cadmium Sulfide
Author: Ronald Lawrence Bellows
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
Book Description
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).
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
Book Description
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).
Length Change Measurements of Electron Irradiated Cadmium in the Energy Range
Author: Stephen Pierce Richard (LT, USAF.)
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 64
Book Description
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 64
Book Description
U. S. Government Research and Development Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1776
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1776
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 260
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 260
Book Description
U.S. Government Research Reports
Author:
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 1118
Book Description
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 1118
Book Description
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 684
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 684
Book Description
Government-wide Index to Federal Research & Development Reports
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 760
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 760
Book Description
Bibliography of Scientific and Industrial Reports
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1698
Book Description
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1698
Book Description