CHAPTER 2: Extraterrestrial Photochemistry: Principles and Applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00544472" target="_blank" >RIV/61388955:_____/21:00544472 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/9781839164354-00009" target="_blank" >http://dx.doi.org/10.1039/9781839164354-00009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/9781839164354-00009" target="_blank" >10.1039/9781839164354-00009</a>
Alternative languages
Result language
angličtina
Original language name
CHAPTER 2: Extraterrestrial Photochemistry: Principles and Applications
Original language description
Energetic processing of interstellar ice mantles and planetary atmospheres via photochemistry is a critical mechanism in the extraterrestrial synthesis of prebiotic molecules. Photochemistry is defined by chemical processes initiated by photon-induced electronic excitation, not involving ionization. In contrast, photons with energies above the ionization threshold initiate radiation chemistry (radiolysis). Vacuum-ultraviolet (6.2-12.4 eV) light may initiate photochemistry and radiation chemistry because the threshold for producing secondary electrons is lower in the condensed phase than in the gas phase. Approximately half of cosmic-ray induced photons incident on interstellar ices in star-forming regions initiate pure photochemistry, while the rest can also initiate radiation chemistry. While experimental techniques such as velocity map imaging may be used to extract exquisite details about gas-phase photochemistry, such detailed information is more difficult to obtain for condensed-phase photochemistry, which involves greater complexity, including the production of excitons, excimers, and exciplexes. Because a primary objective of chemistry is to provide molecular-level mechanistic explanations for macroscopic phenomena, our ultimate goal in this book chapter is to critically evaluate our current understanding of the photochemistry that likely leads to the synthesis of extraterrestrial prebiotic molecules.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Prebiotic Photochemistry. From Urey-Miller-like Experiments to Recent Findings
ISBN
978-1-83916-177-3
Number of pages of the result
28
Pages from-to
9-36
Number of pages of the book
307
Publisher name
RSC
Place of publication
Croydon
UT code for WoS chapter
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