X-Ray induced desorption and photochemistry in CO ice

被引：8

作者：

Dupuy, R. ^{[1
]}

Bertin, M. ^{[1
]}

Feraud, G. ^{[1
]}

Romanzin, C. ^{[2
]}

Putaud, T. ^{[1
]}

Philippe, L. ^{[1
]}

Michaut, X. ^{[1
]}

Jeseck, P. ^{[1
]}

Cimino, R. ^{[3
]}

Baglin, V. ^{[4
]}

Fillion, J. -H. ^{[1
]}

机构：

[1] Univ PSL, Sorbonne Univ, Observ Paris, CNRS,LERMA, F-75005 Paris, France

[2] Univ Paris Saclay, CNRS, UMR 8000, Inst Chim Phys, F-91405 Orsay, France

[3] INFN, Lab Nazl Frascati LNF, F-00044 Frascati, France

[4] CERN, CH-1211 Geneva 23, Switzerland

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2021年 / 23卷 / 30期

关键词：

STIMULATED DESORPTION; EXCITATION-SPECTRA; HIGH-RESOLUTION; SOLID N-2; PHOTODESORPTION; ENERGY; IONS; IONIZATION; ADSORBATES; MOLECULES;

D O I：

10.1039/d1cp02670d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report an investigation of X-ray induced desorption of neutrals, cations and anions from CO ice. The desorption of neutral CO, by far the most abundant, is quantified and discussed within the context of its application to astrochemistry. The desorption of many different cations, including large cations up to the mass limit of the spectrometer, is observed. In contrast, the only desorbing anions detected are O- and C-. The desorption mechanisms of all these species are discussed with the aid of their photodesorption spectrum. The evolution of the X-ray absorption spectrum shows significant chemical modifications of the ice upon irradiation, which along with the desorption of large cations gives a new insight into X-ray induced photochemistry in CO ice.

引用

页码：15965 / 15979

页数：15

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