Measurement of the metastable helium atomic rates important for astrophysical observations

Golubovsky M.; Shaikhislamov I.; Rumenskikh M.

doi:doi:10.26119/VAK2024.132

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Measurement of the metastable helium atomic rates important for astrophysical observations

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MEASUREMENT OF THE METASTABLE HELIUM ATOMIC RATES IMPORTANT FOR ASTROPHYSICAL OBSERVATIONS

Section: EXOPLANETS

Proceedings: MODERN ASTRONOMY: FROM THE EARLY UNIVERSE TO EXOPLANETS AND BLACK HOLES Volume 1

UDC 52 UDC 53 UDC 520 UDC 521 UDC 523 UDC 524 UDC 52-1 UDC 52-6

CSCSTI 41.00 CSCSTI 29.35 CSCSTI 29.31 CSCSTI 29.33 CSCSTI 29.27 CSCSTI 29.05

Russian Classification of Professions by Education 03.06.01 Russian Classification of Professions by Education 03.05.01 Russian Classification of Professions by Education 03.04.03

Russian Library and Bibliographic Classification 2 Russian Library and Bibliographic Classification 223

Russian Trade and Bibliographic Classification 614 Russian Trade and Bibliographic Classification 6135

BISAK SCI004000 Astronomy BISAK SCI005000 Physics / Astrophysics

Golubovsky M. ¹

Shaikhislamov I. ²

Rumenskikh M. ³

Author and publication information

Authors:

1. Institute of Laser Physics, SB RAS
Novosibirsk State Technical University

2. Institute of Laser Physics, SB RAS
Institute of Astronomy of the Russian Academy of Sciences

3. Institute of Laser Physics, SB RAS
Institute of Astronomy of the Russian Academy of Sciences

Type:

Сonference article

DOI:

https://doi.org/10.26119/VAK2024.132

EDN:

https://elibrary.ru/zpabga

Published:

27.12.2024

Subject area:

UDC 52
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAK SCI004000 Astronomy
BISAK SCI005000 Physics / Astrophysics

Language:

English

Keywords:

atomic data; atomic processes; plasmas

Funding:

This work is done in the frame of ELAG section of National Center for Physics and Mathematics.

Abstract and keywords

Abstract (English):
We present an experimental setup for measurement of the collisional rates relevant for the population of the triplet level of metastable helium. To estimate and verify the theoretical values, the absorption in helium plasma in the 1083 nm line will be measured. We are going to use plasma consisting of helium ions generated by

θ

-pinch, filling in a 6 m

^{3}

volume of a vacuum chamber at concentrations of

10^{12}

–

10^{13}

^{- 3}

. Based on the expected parameters, the optical depth

τ = 1

is going to be achieved with a path length

L = 1

km. To increase the effective path length in the plasma, an optical scheme based on a concave resonator is proposed.

Keywords:
atomic data; atomic processes; plasmas

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References

1. Bray I., Burgess A., Fursa D.V., et al., 2000, Astronomy and Astrophysics Supplement Series, 146, p. 481

2. Osterbrock D.E. and Ferland G.J., 2006, Astrophysics Of Gas Nebulae and Active Galactic Nuclei, University Science Books

3. Roberge W. and Dalgarno A., 1982, Astrophysical Journal, 255, p. 489

4. Shaikhislamov I.F., Khodachenko M.L., Lammer H., et al., 2021, Monthly Notices of the Royal Astronomical Society, 500, p. 1404

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