摘要:

The ID-IEregion (30 K–60 K) was studied using sequential isothermals following irradiation near 4.2 K, as a function of electron energy,Ee, and initial defect concentration, Ci. Resistivity was monitored almost continuously, and end point measurements were made at 4.2 K to correct for deviations from Matthiessen's rule. Using temperature-compensated (equivalent) annealing times, obtained with the factor exp{−[(0.117 ± 0.003 eV)/kT]}, isothermal sections were joined to yield densely populated extended recovery profiles. The recovery is stronglyEe-dependent forEe∼ 0.5 MeV, only slightly between 0.6 and 1.4 MeV. TheEe-dependence is consistent with a model in whichi-vpairs of large separations are produced in or near<110> directions.IDis independent ofCi. TheCi-dependence ofIErequiresi-iandi-impurity interactions. A three-dimensional model is fit to the 0.6 MeV data at 2, 7, and 25 ppm point defect concentration, using a Gaussian separation distribution having a mean separation of 1.6 capture radii.

ISSN:0033-7579    

DOI:10.1080/00337577508235397

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A complete diffusional analysis of the low temperature, ID-IEpost-irradiation recovery stages in copper is presented here. In applying this analysis to experiments, intrinsic defect characteristics are deduced by multi-parameter, minimum deviation fitting. The vacancy capture radius for interstitials is found to be 3.2 ± 0.3 lattice constants, for example. In addition, the shape of the initial interstitial-vacancy separation distribution function has been determined. A single distribution function describes this distribution for irradiation by electrons with energies greater than 0.6 MeV. At lower energies, the function is narrowed.

ISSN:0033-7579    

DOI:10.1080/00337577508235398

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

The influence of dilute concentrations of both Au and Ag atoms on the stage I and stage I1 annealing structure in copper has been investigated using electrical resistivity measurements. An excellent agreement of the stage Id and I, experimental data with the theoretical predictions of the SimpsonJosin full diffusional theory is obtained; this analysis determines the capture radius of solute Au atoms in Cu to be 1.7 ± 0.1 I.c. and that of solute Ag atoms in Cu to be 1.8 ± 0.1 I.c. (in comparison with an interstitial-vacancy capture radius of 3.2 1.c.).

ISSN:0033-7579    

DOI:10.1080/00337577508235399

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A method proposed earlier to determine the energy losses from the spectrum of particles scattered by a thick target is used to find the energy losses of N ions in Ti, Ge, Ni, Ag, Au and W in the energy region 1.0 ⩽EN⩽ 7.4 MeV.

ISSN:0033-7579    

DOI:10.1080/00337577508235400

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:0033-7579    

DOI:10.1080/00337577508235401

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:0033-7579    

DOI:10.1080/00337577508235402

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:0033-7579    

DOI:10.1080/00337577508235403

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor