کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10705583 | 1022382 | 2005 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the possible in situ elemental analysis of small bodies with laser ablation TOF-MS
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کلمات کلیدی
Allende - آلندهSmall bodies - اجسام کوچکChemical analysis - تجزیه و تحلیل شیمیایی یا آنالیز شیمیاییElemental composition - ترکیب عنصریIn situ - در سایتComets - دنباله دارTime-of-Flight - زمان پروازLaser ablation - سایش لیزری کند و سوز لیزرAsteroids - سیارکMass spectrometry - طیف سنجی جرمیIonization - یونیزاسیون، یونش
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
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چکیده انگلیسی
An analysis is presented of the potential application of laser ablation time-of-flight mass spectrometry (LA-TOF-MS) to the study of small bodies on in situ and sample return missions. LA-TOF-MS provides the significant advantages of high-quality, low-ambiguity data, no requirement of sample contact or preparation, rapid analysis, and local probe capability. The ability to address particular scientific goals on a given mission depends strongly on obtaining reproducible instrument- and sample-dependent fractionation factors for heterogeneous samples in various operating conditions. LA-TOF-MS analyses of basalt and mineral separate standards, in both powdered and compressed forms, have been used to establish an understanding of elemental fractionation in the mass range from C to Zn and selected higher-mass elements. Results of a preliminary calibration applied to the bulk analysis of carbonaceous meteorites suggests that sufficient precision is obtained from replicate averaging of spectra to differentiate among some sub-classes. Complementary point-by-point LA analyses of such samples could also provide powerful diagnostic information for mineralogy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 53, Issue 8, July 2005, Pages 817-838
Journal: Planetary and Space Science - Volume 53, Issue 8, July 2005, Pages 817-838
نویسندگان
W.B. Brinckerhoff,