Radiation effects in astrophysical ices

CIRIL, 30 years of interdisciplinary research at GANIL

Boduch, Philippe^1 ; Dartois, Emmanuel^2,3 ; De Barros, Ana L F^4 ; Da Silveira, Enio F^5 ; Domaracka, Alicja^1 ; Lv, Xue-Yang^1 ; Palumbo, Maria Elisabetta^6 ; Pilling, Sergio^7 ; Rothard, Hermann^1 ; Duarte, Eduardo Seperuelo^8 ; Strazzulla, Giovanni^6

Centre de Recherche sur les Ions, les Matériaux et la Photonique (UMR6252), CEA/CNRS/ENSICAEN/Université de Caen-Basse Normandie UCBN, CIMAP-CIRIL-Ganil, BP 5133, Caen Cedex 05

14070, France^1

CNRS-INSU, Institut d'Astrophysique Spatiale, UMR 8617, Orsay

91405, France^2

Université Paris Sud, Institut d'Astrophysique Spatiale, UMR 8617, Orsay

91405, France^3

Departamento de Física, Centro Federal de Educacão Tecnológica Celso Suckow da Fonseca, Av. Maracanã 229, Rio de Janeiro, RJ

20271-110, Brazil^4

Departamento de Física, Pontifícia Universidade Católica Do Rio de Janeiro, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ

22451-900, Brazil^5

INAF-Osservatorio Astrofisico di Catania, Catania, Italy^6

Universidade Do Vale Do Paraiba (UNIVAP), Instituto de Pesquisa e Desenvolvimento (IPandD), Av. Shishima Hifumi 2911, São José dos Campos, SP

CEP 12244-000, Brazil^7

Grupo de Física e Astronomia, Instituto Federal de Educação Ciência e Tecnologia Do Rio de Janeiro, Rua Lucio Tavares, 1045, Nilópolis, RJ

26530-060, Brazil^8

关键词: Beam-lines;    Exposed to;    Icy objects;    Initial conditions;    Organic molecules;    Radiation field;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/629/1/012008/pdf
DOI  :  10.1088/1742-6596/629/1/012008

来源: IOP

【 摘 要 】

The interaction of heavy ions with astrophysical ices was studied at different beamlines of GANIL by infrared absorption spectroscopy. This allowed simulating in the laboratory the physico-chemical modifications induced in icy objects in space, exposed to radiation fields such as the solar wind, magnetospheric particles and interstellar cosmic rays. We briefly discuss sputtering, destruction and formation of molecules, amorphization and compaction, implantation, and finally the formation of organic molecules. This latter topic is related to the question of the initial conditions for the emergence of life.