Impact ionization mass spectra of anorthite cosmic dust analogue particles

被引：16

作者：

Hillier, J. K. ^{[1
,2
,3
]}

Postberg, F. ^{[1
,4
,5
]}

Sestak, S. ^{[2
,6
]}

Srama, R. ^{[4
,5
]}

Kempf, S. ^{[3
,4
,7
]}

Trieloff, M. ^{[1
]}

Sternovsky, Z. ^{[3
]}

Green, S. F. ^{[2
]}

机构：

[1] Univ Heidelberg, Inst Geowissensch, DE-69120 Heidelberg, Germany

[2] Open Univ, Planetary & Space Sci Res Inst, Milton Keynes MK7 6AA, Bucks, England

[3] Univ Colorado, LASP, Boulder, CO 80309 USA

[4] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[5] Univ Stuttgart, Inst Raumfahrtsyst, Stuttgart, Germany

[6] Commonwealth Sci & Ind Res Org, Petr Resources, Sydney, NSW, Australia

[7] Tech Univ Carolo Wilhelmina Braunschweig, D-38106 Braunschweig, Germany

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS | 2012年 / 117卷

基金：

英国科学技术设施理事会;

关键词：

ALUMINUM-RICH INCLUSIONS; HYPERVELOCITY IMPACT; INTERPLANETARY DUST; INTERSTELLAR DUST; SOLAR-SYSTEM; COMET HALLEY; E-RING; CARBONACEOUS CHONDRITES; REFRACTORY INCLUSIONS; GRAAFF ACCELERATOR;

D O I：

10.1029/2012JE004077

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Anorthite, the Ca-rich end-member of plagioclase feldspar, is a dominant mineral component of the Lunar highlands. Plagioclase feldspar is also found in comets, meteorites and stony asteroids. It is therefore expected to contribute to the population of interplanetary (and circumplanetary) dust grains within the solar system. After coating micron-and submicron-sized grains of Anorthite with a conductive layer of Platinum, the mineral was successfully accelerated to hypervelocity speeds in the Max Planck Institut fur Kernphysik's Van de Graaff accelerator. We present impact ionization mass spectra generated following the impacts of anorthite grains with a prototype mass spectrometer (the Large Area Mass Analyser, LAMA) designed for use in space, and discuss the behavior of the spectra with increasing impact energy. Correlation analysis is used to identify the compositions and sources of cations present in the spectra, enabling the identification of several molecular cations (e.g., CaAlO2, CaSiO2, Ca2AlO3/CaAlSi2O2) which identify anorthite as the progenitor bulk grain material.

引用

页数：16

共 87 条

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