摘要:

In this note we present some observations on the annealing procedure for dysprosium activated calcium sulphate thermoluminescent phosphor when high level dose occurs.

ISSN:0033-7579    

DOI:10.1080/01422448308209645

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

The first stage of the M-center coloring has been investigated in europium-doped NaCl and KCl at room temperature, as a function of impurity concentration in the range 30–800 ppm. The results indicate that the M-center production can be described by a statistical process in which the relationship M=K1F2is obeyed. It was also ascertained that the value for the constant K1is dependent on the impurity concentration and not very sensitive to the type of the alkali halide matrix.

ISSN:0033-7579    

DOI:10.1080/01422448308209646

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Three different kinds of dysprosium activated calcium sulphate have been used to investigate its sensitivity to gammaray in low dose region.

ISSN:0033-7579    

DOI:10.1080/01422448308209647

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

The problems of collimation and focusing of neutral and high-energy charged particles at single crystals and sets of single crystal multilayed structures are considered.

ISSN:0033-7579    

DOI:10.1080/01422448308209648

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

ISSN:0033-7579    

DOI:10.1080/01422448308209649

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

A copper constantan thin film thermocouple has been used to measure the surface temperature of a target during ion bombardment. Argon beams of 50–100 keV energy and 0–300 mwatt power have been used as heat source on a target in contact with a massive copper holder maintained at 80 or at 300K. The thermal contact has been changed from that ensured by the mechanical pressure of a metal spring to that obtained by gluing the target to the holder with a silver base paste. The surface temperature reaches a steady state value after about 150 s of bombardment and its maximum value depends on the beam power and on the quality of the thermal contact with the holder. Beam induced surface temperature increase as large as 270°C are measured in the case of a bad thermal contact and for a beam power of 300 mwatt.

ISSN:0033-7579    

DOI:10.1080/01422448308209650

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

We report measurements of the dose dependence of the sputtering of evaporated films by 30 keV ions under UHV. An initial (sub-monolayer) enhanced sputtering is attributed to the removal of weakly bound atoms; this enhancement does not depend on the incidence angle of the projectile.

ISSN:0033-7579    

DOI:10.1080/01422448308209651

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor