Zobrazeno 1 - 10
of 50
pro vyhledávání: '"John C. Rucklidge"'
Autor:
X.-L. Zhao, Graham C. Wilson, William E. Kieser, A.E. Litherland, J.S.A. Krestow, John C. Rucklidge
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 259:194-198
The operating parameters for a high current caesium sputter source have been modified so that stable beams of anions can be obtained from natural non-conducting samples. This technique has been applied to the analysis of gold and platinum group eleme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60e87eae8849b223b61a893235bc6add
https://doi.org/10.1016/j.nimb.2007.01.243
https://doi.org/10.1016/j.nimb.2007.01.243
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 189:387-393
This article illustrates the application of the proton-induced X-ray emission (PIXE) technique to detailed documentation of mineral assemblages, with emphasis on base–metal ores. Some of the investigations aided by the PIXE laboratory at Guelph sin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::188fd55a6328de87efe137c82bbf6482
https://doi.org/10.1016/s0168-583x(01)01095-3
https://doi.org/10.1016/s0168-583x(01)01095-3
Publikováno v:
The Canadian Mineralogist. 40:473-479
La cabriite, dont la composition ideale est Pd 2 SnCu, n'a ete signalee qu'a cinq endroits au monde depuis sa decouverte dans le camp minier de Noril'sk-Talnakh, dans le nord-ouest de la Russie. Nous resumonsles decouvertes anterieures a propos de la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3ed9dba0901ccb09445c10612c12553
https://doi.org/10.2113/gscanmin.40.2.473
https://doi.org/10.2113/gscanmin.40.2.473
Autor:
William E. Kieser, J.P Doupé, Graham C. Wilson, J.S.A. Krestow, John C. Rucklidge, R.P. Beukens, A.E. Litherland, X.-L. Zhao, I. Tomski
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 172:206-210
Some of the continuing research into AMS at IsoTrace: neutral injection AMS, heavy element backgrounds, the analysis of non-conducting samples and low level 14C detection is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06231dfb68d6921c5bac9958d14ba04c
https://doi.org/10.1016/s0168-583x(00)00120-8
https://doi.org/10.1016/s0168-583x(00)00120-8
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 123:583-588
We have measured the abundances of seven precious metals in NiFe phases (kamacite and plessite) in six iron meteorites. These in-situ analyses, obtained by accelerator mass spectrometry (AMS) on small polished samples previously characterized by e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc2303e2303fa0eb4bb96465522d9ba8
https://doi.org/10.1016/s0168-583x(96)00415-6
https://doi.org/10.1016/s0168-583x(96)00415-6
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 123:424-430
Accelerator Mass Spectrometry (AMS) has been applied to determine ReOs isochrons for the NiFe phases of a set of iron meteorites with emphasis on group IIA. The method requires no chemical sample treatment and permits in-situ analysis of the Re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ffa1b11811f8791649ae1437bf690e2
https://doi.org/10.1016/s0168-583x(96)00609-x
https://doi.org/10.1016/s0168-583x(96)00609-x
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 123:579-582
A brief overview is provided of the uses of AMS in mineral analysis, emphasizing the selection of appropriate samples. Simple guidelines are given for judging the suitability of a set of samples (and the type of problem that they pose) for AMS, as op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::839578410d0ab99813c3fe64aa45fc11
https://doi.org/10.1016/s0168-583x(96)00413-2
https://doi.org/10.1016/s0168-583x(96)00413-2
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 123:414-423
We have applied an in-situ method of Accelerator Mass Spectrometry (AMS) to determine 107Ag and 109Ag compositions in several groups of iron meteorites and we have observed extreme variations of 107Ag and 109Ag counting rates from those samples as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69113021950690329a7a313c0a47f2ba
https://doi.org/10.1016/s0168-583x(96)00746-x
https://doi.org/10.1016/s0168-583x(96)00746-x
Autor:
A.E. Litherland, John C. Rucklidge, X.-L. Zhao, Linas R. Kilius, R.P. Beukens, William E. Kieser
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 123:5-9
The requirements for AMS solid sample ion sources: high stable currents, high efficiency, low memory effect, rapid sample switching and isobar separation are reviewed and the application of a variety of sources, using negative and neutral primary spu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f44b04b601b9bbdef337faf9ed63d9e
https://doi.org/10.1016/s0168-583x(96)00715-x
https://doi.org/10.1016/s0168-583x(96)00715-x
Publikováno v:
Economic Geology. 90:255-270
The mineralogical residence of rare elements is of great academic and practical interest. In situ analytical methods employing largely nondestructive means (electron or proton bombardment) or sputtering by ion beams or laser ablation can be used to m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7418b7e1143b483da285a14fd2473c6
https://doi.org/10.2113/gsecongeo.90.2.255
https://doi.org/10.2113/gsecongeo.90.2.255