Thio residue from thermal processing of cometary ices containing carbon disulfide and ammonia

R. R.J. Methikkalam; S. Pavithraa; S. P. Murali Babu; H. Hill; B. N. Raja Sekhar; T. Pradeep; B. Sivaraman

doi:10.1016/j.asr.2016.04.028

Thio residue from thermal processing of cometary ices containing carbon disulfide and ammonia

R. R.J. Methikkalam
, S. Pavithraa
, S. P. Murali Babu
, H. Hill
, B. N. Raja Sekhar
, T. Pradeep
, B. Sivaraman^*

^*Kontaktforfatter

SDU Robotics

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstract

We have carried out experimental investigation on binary ice mixture containing carbon disulfide (CS ₂ ) and ammonia (NH ₃ ) ices formed at 10 K. Icy films were formed in various combinations to investigate the reactivity of CS ₂ and NH ₃ molecules on cometary nucleus. In the case of NH ₃ ices, deposition carried out at 10 K was found to contain NH ₃ homo-dimers that was found to reorient upon annealing to 40 K. Phase transition was found to take place as the 10 K ice was warmed to higher temperatures and the phase transition temperature was found to be 5 K higher for the mixed ice in comparison to the layered deposits. Thermal processing of the mixed deposition of CS ₂ -NH ₃ ice was found to leave thio residue, which could be ammonium dithiocarbamate that was even found to be present at 340 K.

Originalsprog	Engelsk
Tidsskrift	Advances in Space Research
Vol/bind	58
Udgave nummer	3
Sider (fra-til)	438-443
Antal sider	6
ISSN	0273-1177
DOI	https://doi.org/10.1016/j.asr.2016.04.028
Status	Udgivet - 1. aug. 2016

Bibliografisk note

Publisher Copyright:
© 2016 COSPAR.

Finansiering

SP and BS acknowledges the support from DST – India Grant ( IFA-11CH-11 ). RRJM acknowledges UGC for his research fellowship and TP acknowledges the support from DST for a research grant.

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title = "Thio residue from thermal processing of cometary ices containing carbon disulfide and ammonia",

abstract = " We have carried out experimental investigation on binary ice mixture containing carbon disulfide (CS 2 ) and ammonia (NH 3 ) ices formed at 10 K. Icy films were formed in various combinations to investigate the reactivity of CS 2 and NH 3 molecules on cometary nucleus. In the case of NH 3 ices, deposition carried out at 10 K was found to contain NH 3 homo-dimers that was found to reorient upon annealing to 40 K. Phase transition was found to take place as the 10 K ice was warmed to higher temperatures and the phase transition temperature was found to be 5 K higher for the mixed ice in comparison to the layered deposits. Thermal processing of the mixed deposition of CS 2 -NH 3 ice was found to leave thio residue, which could be ammonium dithiocarbamate that was even found to be present at 340 K. ",

keywords = "Astrochemistry, Comets: general, Infrared: general, ISM: molecules, Methods: laboratory: solid state",

author = "Methikkalam, \{R. R.J.\} and S. Pavithraa and \{Murali Babu\}, \{S. P.\} and H. Hill and \{Raja Sekhar\}, \{B. N.\} and T. Pradeep and B. Sivaraman",

note = "Funding Information: SP and BS acknowledges the support from DST – India Grant ( IFA-11CH-11 ). RRJM acknowledges UGC for his research fellowship and TP acknowledges the support from DST for a research grant. Publisher Copyright: {\textcopyright} 2016 COSPAR.",

year = "2016",

month = aug,

day = "1",

doi = "10.1016/j.asr.2016.04.028",

language = "English",

volume = "58",

pages = "438--443",

journal = "Advances in Space Research",

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T1 - Thio residue from thermal processing of cometary ices containing carbon disulfide and ammonia

AU - Methikkalam, R. R.J.

AU - Pavithraa, S.

AU - Murali Babu, S. P.

AU - Hill, H.

AU - Raja Sekhar, B. N.

AU - Pradeep, T.

AU - Sivaraman, B.

N1 - Funding Information: SP and BS acknowledges the support from DST – India Grant ( IFA-11CH-11 ). RRJM acknowledges UGC for his research fellowship and TP acknowledges the support from DST for a research grant. Publisher Copyright: © 2016 COSPAR.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - We have carried out experimental investigation on binary ice mixture containing carbon disulfide (CS 2 ) and ammonia (NH 3 ) ices formed at 10 K. Icy films were formed in various combinations to investigate the reactivity of CS 2 and NH 3 molecules on cometary nucleus. In the case of NH 3 ices, deposition carried out at 10 K was found to contain NH 3 homo-dimers that was found to reorient upon annealing to 40 K. Phase transition was found to take place as the 10 K ice was warmed to higher temperatures and the phase transition temperature was found to be 5 K higher for the mixed ice in comparison to the layered deposits. Thermal processing of the mixed deposition of CS 2 -NH 3 ice was found to leave thio residue, which could be ammonium dithiocarbamate that was even found to be present at 340 K.

AB - We have carried out experimental investigation on binary ice mixture containing carbon disulfide (CS 2 ) and ammonia (NH 3 ) ices formed at 10 K. Icy films were formed in various combinations to investigate the reactivity of CS 2 and NH 3 molecules on cometary nucleus. In the case of NH 3 ices, deposition carried out at 10 K was found to contain NH 3 homo-dimers that was found to reorient upon annealing to 40 K. Phase transition was found to take place as the 10 K ice was warmed to higher temperatures and the phase transition temperature was found to be 5 K higher for the mixed ice in comparison to the layered deposits. Thermal processing of the mixed deposition of CS 2 -NH 3 ice was found to leave thio residue, which could be ammonium dithiocarbamate that was even found to be present at 340 K.

KW - Astrochemistry

KW - Comets: general

KW - Infrared: general

KW - ISM: molecules

KW - Methods: laboratory: solid state

UR - https://www.scopus.com/pages/publications/84973883714

U2 - 10.1016/j.asr.2016.04.028

DO - 10.1016/j.asr.2016.04.028

M3 - Journal article

AN - SCOPUS:84973883714

SN - 0273-1177

VL - 58

SP - 438

EP - 443

JO - Advances in Space Research

JF - Advances in Space Research

IS - 3

ER -

Thio residue from thermal processing of cometary ices containing carbon disulfide and ammonia

Abstract

Bibliografisk note

Finansiering

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