کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1781244 | 1523947 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical modelling of mineral impact ionisation spectra
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present model mass spectra of fayalite, forsterite, enstatite, ferrosilite, magnesiohornblende, ferrohornblende, anorthites, albite and Mg-Al spinel, as would be generated by a medium resolution impact ionisation cosmic dust mass spectrometer. Spectral peak intensities are found using ion relative sensitivity factors (RSFs) derived for TOF-SIMS mineral analysis. We demonstrate that, although TOF-SIMS RSFs are a reasonable approximation for the RSFs of impact ionisation, the RSFs for some important elements, such as Si, may differ by up to a factor of four. However, the TOF-SIMS RSFs are in general a valuable tool for predicting the peak intensities of inorganic species in impact ionisation mass spectra of minerals and mineral mixtures. The model spectra are used to estimate the ability of a medium resolution mass spectrometer to discriminate between different mineral compositions, and compared with impact ionisation mass spectra of anorthite cosmic dust analogue particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 89, December 2013, Pages 159-166
Journal: Planetary and Space Science - Volume 89, December 2013, Pages 159-166
نویسندگان
Jon K. Hillier, K. Fiege, M. Trieloff, R. Srama,