HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >

Depth profiling analysis of solar wind helium collected in diamond-like carbon film from Genesis

Files in This Item:
GJ_49_p559-.pdf1.09 MBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Depth profiling analysis of solar wind helium collected in diamond-like carbon film from Genesis
Authors: Bajo, Ken-ichi Browse this author
Olinger, Chad T. Browse this author
Jurewicz, Amy J. G. Browse this author
Burnett, Donald S. Browse this author
Sakaguchi, Isao Browse this author
Suzuki, Taku Browse this author
Itose, Satoru Browse this author
Ishihara, Morio Browse this author
Uchino, Kiichiro Browse this author
Wieler, Rainer Browse this author
Yurimoto, Hisayoshi Browse this author →KAKEN DB
Keywords: solar wind
depth profile
NASA Genesis mission
Issue Date: 2015
Publisher: The Geochemical Society of Japan
Journal Title: Geochemical Journal
Volume: 49
Issue: 5
Start Page: 559
End Page: 566
Publisher DOI: 10.2343/geochemj.2.0385
Abstract: The distribution of solar-wind ions in Genesis mission collectors, as determined by depth profiling analysis, constrains the physics of ion-solid interactions involving the solar wind. Thus, they provide an experimental basis for revealing ancient solar activities represented by solar-wind implants in natural samples. We measured the first depth profile of 4He in a Genesis collector; the shallow implantation (peaking at <20 nm) required us to use sputtered neutral mass spectrometry with post-photoionization by a strong field. The solar wind He fluence calculated using depth profiling is ~8.5 × 1014 cm-2. The shape of the solar wind 4He depth profile is consistent with TRIM simulations using the observed 4He velocity distribution during the Genesis mission. It is therefore likely that all solar-wind elements heavier than H are completely intact in this Genesis collector and, consequently, the solar particle energy distributions for each element can be calculated from their depth profiles. Ancient solar activities and space weathering of solar system objects could be quantitatively reproduced by solar particle implantation profiles.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 圦本 尚義

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University