Towards state selective recombination of H3+ under astrophysically relevant conditions.

التفاصيل البيبلوغرافية
العنوان:	Towards state selective recombination of H3⁺ under astrophysically relevant conditions.
المؤلفون:	Dohnal, Petr, Shapko, Dmytro, Kálosi, Ábel, Kassayová, Miroslava, Roučka, Štěpán, Rednyk, Serhiy, Plašil, Radek, Hejduk, Michal, Glosík, Juraj
المصدر:	Faraday Discussions; 7/18/2019, Vol. 217, p220-234, 15p
مستخلص:	We present studies on the thermalisation of H3⁺ ions in a cold He/Ar/H2 plasma at temperatures 30–70 K. We show that we are able to generate a rotationally thermalised H3⁺ ensemble with a population of rotational and nuclear spin states corresponding to a particular ion translational temperature. By varying the para-H2 fraction used in the experiment we are able to produce para-H3⁺ ions with fractional populations higher than those corresponding to thermodynamic values. At 35 K, only the lowest rotational states of para and ortho H3⁺ are populated. This is the first step towards experimental studies of electron–molecular ion recombination processes with precisely specified quantum states at astrophysically relevant temperatures. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات:	Complementary Index

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