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Water ice and radiation in the solar...

Mastrapa, Rachel Michelle Elizabeth.

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Water ice and radiation in the solar system.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Water ice and radiation in the solar system./
Author:	Mastrapa, Rachel Michelle Elizabeth.
Description:	160 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1909.
Contained By:	Dissertation Abstracts International65-04B.
Subject:	Physics, Astronomy and Astrophysics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3131621
ISBN:	0496788629

Water ice and radiation in the solar system.
Mastrapa, Rachel Michelle Elizabeth.

Water ice and radiation in the solar system. - 160 p.

Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1909.

Thesis (Ph.D.)--The University of Arizona, 2004.

Infrared detection of water ice phase can reveal the temperature and radiation history of a surface. In this dissertation, I will describe and quantify the process of amorphization of crystalline ice through lab experiments and computer simulations. I will then show how these measurements can be applied to ground based observations.

ISBN: 0496788629Subjects--Topical Terms:

1019521
Physics, Astronomy and Astrophysics.

Water ice and radiation in the solar system.
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020 $a 0496788629
035 $a (UnM)AAI3131621
035 $a AAI3131621
040 $a UnM $c UnM
100 1 $a Mastrapa, Rachel Michelle Elizabeth. $3 1928117
245 1 0 $a Water ice and radiation in the solar system.
300 $a 160 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1909.
500 $a Director: Robert H. Brown.
502 $a Thesis (Ph.D.)--The University of Arizona, 2004.
520 $a Infrared detection of water ice phase can reveal the temperature and radiation history of a surface. In this dissertation, I will describe and quantify the process of amorphization of crystalline ice through lab experiments and computer simulations. I will then show how these measurements can be applied to ground based observations.
520 $a The amorphous phase of solid water forms at temperatures less than 130 K, and converts to crystalline ice at 135 K in an exothermic and irreversible reaction. The amorphous and crystalline phases have distinctive spectra in the infrared. However, ion irradiation of crystalline water ice in the lab makes the infrared spectrum indistinguishable from that of amorphous ice. If the process of amorphization can be quantified, the model can be applied to various planetary surfaces, using an estimate of the temperature and the radiation environment.
520 $a This work sheds light on the physical processes behind amorphization. I will show that the irradiation of crystalline ice does not create the amorphous phase of ice, but produces a sample that is spectrally indistinguishable from amorphous water ice. The changes in the spectral features are caused by the breaking of OH and hydrogen bonds among other processes. The temperature dependence of this process is a function of the ability of free hydrogen and oxygen to reform the crystalline lattice.
590 $a School code: 0009.
650 4 $a Physics, Astronomy and Astrophysics. $3 1019521
690 $a 0606
710 2 0 $a The University of Arizona. $3 1017508
773 0 $t Dissertation Abstracts International $g 65-04B.
790 1 0 $a Brown, Robert H., $e advisor
790 $a 0009
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3131621