Theoretical study of possible ion-molecule reactions leading to precursors of glycine in the interstellar medium

2004 ◽  
Vol 98 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Antonio Largo ◽  
Pilar Redondo ◽  
Carmen Barrientos
Keyword(s):  
Interstellar Medium ◽  
Theoretical Study ◽  
Ion Molecule Reactions

Comparison of experimental and theoretical quantum-state-selected integral cross-sections for the H2O+ + H2 (D2) reactions in the collision energy range of 0.04–10.00 eV

2016 ◽  
Vol 18 (32) ◽  
pp. 22509-22515 ◽  
Author(s):  
Hongwei Song ◽  
Anyang Li ◽  
Hua Guo ◽  
Yuntao Xu ◽  
Bo Xiong ◽  
...  
Keyword(s):  
Energy Range ◽  
Quantum State ◽  
Cross Sections ◽  
Collision Energy ◽  
Theoretical Study ◽  
Ion Molecule Reactions

A combined experimental–theoretical study of the rovibrationally state-selected ion–molecule reactions H2O+(X2B1; v1+v2+v3+; NKa+Kc++) + H2 (D2) → H3O+ (H2DO+) + H (D), where (v1+v2+v3+) = (000), (020), and (100) and NKa+Kc++ = 000, 111, and 211.

scholarly journals Stardust silicate nucleation kick-started by SiO+TiO 2

2013 ◽  
Vol 371 (1994) ◽  
pp. 20110580 ◽  
Author(s):  
T. P. M. Goumans ◽  
Stefan T. Bromley
Keyword(s):  
Interstellar Medium ◽  
Theoretical Study ◽  
Planetary System ◽  
Reaction Scheme ◽  
Dust Particles ◽  
Nucleation Process ◽  
Condensation Zone ◽  
Stellar Outflows ◽  
The Universe ◽  
Previous Idea

Dust particles are quintessential for the chemical evolution of the Universe. Dust nucleates in stellar outflows of dying stars and subsequently travels through the interstellar medium, continuously evolving via energetic processing, collisions and condensation. Finally, dust particles are incorporated in the next-generation star or its surrounding planetary system. In oxygen-rich stellar outflows, silicates are observed in the condensation zone (1200–1000 K), but, in spite of several decades of experimental and theoretical study, the stardust nucleation process remains poorly understood. We have previously shown that under these conditions ternary Mg–Si–O clusters may start forming at high enough rates from SiO, Mg and H 2 O through heteromolecular association processes. In this reaction scheme, none of the possible initial association reactions was thermodynamically favourable owing to the large entropy loss at these temperatures. Here, we follow a previous idea that the incorporation of TiO 2 could help to initiate stardust nucleation. In contrast to these studies, we find that there is no need for TiO 2 cluster seeds—instead, one molecule of TiO 2 is sufficient to kick-start the subsequent nucleation of a silicate dust particle.

scholarly journals Theoretical study of the infrared frequencies of crystalline methyl acetate under interstellar medium conditions

2016 ◽  
Vol 153 ◽  
pp. 415-421 ◽  
Author(s):  
Radhika Narayanan ◽  
Kensuke Inomata ◽  
Geetha Gopakumar ◽  
Bhalamurugan Sivaraman ◽  
Yasunari Zempo ◽  
...  
Keyword(s):  
Interstellar Medium ◽  
Methyl Acetate ◽  
Theoretical Study ◽  
Infrared Frequencies

Experimental and theoretical study on gas-phase ion/molecule reactions of silver trimer cation, Ag3+, with 12-crown-4

2005 ◽  
Vol 123 (2) ◽  
pp. 024314 ◽  
Author(s):  
Kousuke Kumondai ◽  
Michisato Toyoda ◽  
Morio Ishihara ◽  
Itsuo Katakuse ◽  
Takae Takeuchi ◽  
...  
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Ion Molecule Reactions ◽  
Gas Phase Ion

Kinetic and theoretical study on the ion/molecule reactions of methoxymethyl cation with ammonia

1987 ◽  
Vol 109 (2) ◽  
pp. 295-300 ◽  
Author(s):  
Satoshi Okada ◽  
Yasuo Abe ◽  
Setsuo Taniguchi ◽  
Shinichi Yamabe
Keyword(s):  
Theoretical Study ◽  
Ion Molecule Reactions
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