Far-ultraviolet photolysis of solid methane

被引：15

作者：

Lo, Jen-Iu ^{[1
]}

Lin, Meng-Yeh ^{[1
]}

Peng, Yu-Chain ^{[1
]}

Chou, Sheng-Lung ^{[1
]}

Lu, Hsiao-Chi ^{[1
]}

Cheng, Bing-Ming ^{[1
]}

Ogilvie, J. F. ^{[2
,3
]}

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[2] Univ Costa Rica, Escuela Quim, San Jose 115012060, Costa Rica

[3] Univ Costa Rica, CELEQ, San Jose 115012060, Costa Rica

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2015年 / 451卷 / 01期

关键词：

astrochemistry; molecular processes; methods: laboratory: atomic; ISM: molecules; infrared: ISM; YOUNG STELLAR OBJECTS; SPECTRAL IRRADIANCE; CARBON CLUSTERS; ION IRRADIATION; ICES; INTERSTELLAR; CH4; PHOTOCHEMISTRY; SPECTROSCOPY; ATMOSPHERE;

D O I：

10.1093/mnras/stv935

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Irradiation of samples of pure solid methane at 3K with far-ultraviolet light from a synchrotron yielded products CH3, C2H2, C2H4 and C2H6 that were quantitatively identified through their infrared absorption spectra. The greatest wavelengths at which products CH3, C2H4, C2H6 and C2H2 were generated were 140, 140, 175 and 190 nm, respectively. Cassini spacecraft has observed the condensed methane on Titan. The observation demonstrates the existence of pure condensed methane in astro-environments. Information about the dissociation of CH4 at a low temperature with photons of varied energy has implications for astrophysical environments.

引用

页码：159 / 166

页数：8

共 38 条

[1] ISOCAM-CVF spectroscopy of the circumstellar environment of young stellar objects
Alexander, RD
Casali, MM
André, P
Persi, P
Eiroa, C
[J]. ASTRONOMY & ASTROPHYSICS, 2003, 401 (02): : 613 - 624
[2] A THEORETICAL-MODEL FOR THE ORIENTATION OF CARBENE INSERTION INTO SATURATED-HYDROCARBONS AND THE ORIGIN OF THE ACTIVATION BARRIER
BACH, RD
SU, MD
ALDABBAGH, E
ANDRES, JL
SCHLEGEL, HB
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (22) : 10237 - 10246
[3] Ion irradiation of CH4-containing icy mixtures
Baratta, GA
Domingo, M
Ferini, G
Leto, G
Palumbo, ME
Satorre, MA
Strazzulla, G
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 209 : 283 - 287
[4] Laboratory studies on the irradiation of methane in interstellar, cometary, and solar system ices
Bennett, Chris J.
Jamieson, Corey S.
Osamura, Yoshihiro
Kaiser, Ralf I.
[J]. ASTROPHYSICAL JOURNAL, 2006, 653 (01) : 792 - 811
[5] Spectroscopy of Comet Hale-Bopp in the infrared
Brooke, TY
Weaver, HA
Chin, G
Bockele-Morvan, D
[J]. ICARUS, 2003, 166 (01) : 167 - 187
[6] COSMIC-RAY INDUCED PHOTONS IN DENSE INTERSTELLAR CLOUDS
CECCHIPESTELLINI, C
AIELLO, S
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 258 (01) : 125 - 133
[7] The composition and distribution of dust along the line of sight toward the Galactic center
Chiar, JE
Tielens, AGGM
Whittet, DCB
Schutte, WA
Boogert, ACA
Lutz, D
van Dishoeck, EF
Bernstein, MP
[J]. ASTROPHYSICAL JOURNAL, 2000, 537 (02) : 749 - 762
[8] Vacuum ultraviolet photochemistry of methane, silane and germane
Cook, PA
Ashfold, MNR
Jee, YJ
Jung, KH
Harich, S
Yang, XM
[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (10) : 1848 - 1860
[9] Cosmic ray impact on astrophysical ices: laboratory studies on heavy ion irradiation of methane
de Barros, A. L. F.
Bordalo, V.
Seperuelo Duarte, E.
da Silveira, E. F.
Domaracka, A.
Rothard, H.
Boduch, P.
[J]. ASTRONOMY & ASTROPHYSICS, 2011, 531
[10] PREDICTION OF INFRARED INTENSITIES BY USING DENSITY-FUNCTIONAL THEORY - APPLICATIONS TO H2O, HOO, CH4, AND C2H4
DOBBS, KD
DIXON, DA
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (17) : 4498 - 4501

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