ISSN:0033-7579    

DOI:10.1080/00337578208216831

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

ISSN:0033-7579    

DOI:10.1080/00337578208216832

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

Parallel arrays of long cylindrical objects with vanishing distance correlation and defined orientation, such as latent nuclear tracks, generated at the heavy ion accelerator facility GSI Darmstadt, represent an almost ideal case for a scattering experiment. A feasibility study has been conducted, using small angle neutron scattering, yielding the following results:

ISSN:0033-7579    

DOI:10.1080/00337578208216833

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

The solar wind and energetic magnetospheric ions are important agents for modification of the planetary surfaces and atmospheres with which they interact. Knowledge of the details of the sputtering mechanisms involved in these interactions can help in determining the interrelation of a number of planetary processes. In this paper I shall discuss several sites in the solar system where sputtering phenomena are significant. Our quantitative understanding of these examples could be extended if we had a more detailed picture of the sputtering of insulators. Recent experimental results that bear on these problems as well as the gaps in our knowledge that prevent further progress will be presented.

ISSN:0033-7579    

DOI:10.1080/00337578208216834

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

Particle-grain interactions at implantation energies occur in a large variety of astrophysical sites. The expected physical, chemical and isotopic effects are discussed, as deduced from the analyses of (i) lunar grains implanted with the solar wind ions, and (ii) terrestrial grains implanted in the lab with H, C, N,···, ions. Special emphasis is placed on the amorphisation and the erosion of the grains, and on the synthesis of radicals and molecules within the implanted grains. Implications in planetology and astrophysics are presented.

ISSN:0033-7579    

DOI:10.1080/00337578208216835

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

High erosion has been detected during the bombardment of ice (H2O and D2O) at LN2 temperature by helium and argon beams. In the range 20–100 keV, the erosion yield increases with the energy and mass of the impinging ions. The eroded particles have been analysed by a quadrupole mass spectrometer and the main component is formed by H2(or D2) H2O (or D2O) and O2molecules.

ISSN:0033-7579    

DOI:10.1080/00337578208216836

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

ISSN:0033-7579    

DOI:10.1080/00337578208216837

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor