A4 Article in conference proceedings
On the formation mechanism of impurity helium solids (2006)

Popov, E., Ahokas, J., Eloranta, J., & Kunttu, H. (2006). On the formation mechanism of impurity helium solids. AIP Conference Proceedings, . https://doi.org/10.1063/1.2354748

JYU authors or editors

Publication details

All authors or editors: Popov, Evgeny; Ahokas, Jussi; Eloranta, Jussi; Kunttu, Henrik

Journal or series: AIP Conference Proceedings

ISSN: 0094-243X

eISSN: 1935-0465

Publication year: 2006

Number in series: 850

Pages range: 384

Publisher: American Institute of Physics

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1063/1.2354748

Publication open access: Not open

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Abstract

In this study we present new data on cooling of seeded (N2 and NO) helium jets prior to penetration into the bulk helium. In this case, the fine structure originating from the molecular excited states is comparable to kT and therefore the corresponding ultraviolet and visible (UV/VIS) emissions can be used to estimate the temperature of the surroundings of the molecules. Cooling down of the clusters inside the bulk helium occurred slowly, presumably due to extra heat generated by atom‐atom recombination.

Keywords: helium; clusters; spectroscopy; emission (physics)

Free keywords: Liquids; Bubble model; Gas jet; Superfluids; Density functional theory; Chemical elements

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Ministry reporting: Yes

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