Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Role of Metastable Atoms and Molecules of Helium in Excitation Transfer to Hydrogen Atoms. / Skoblo, Yu É; Ivanov, V. A.
в: Optics and Spectroscopy (English translation of Optika i Spektroskopiya), Том 88, № 2, 02.2000, стр. 151-157.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Role of Metastable Atoms and Molecules of Helium in Excitation Transfer to Hydrogen Atoms
AU - Skoblo, Yu É
AU - Ivanov, V. A.
N1 - Funding Information: ACKNOWLEDGMENTS The authors thank B.P. Lavrov, A.S. Mel’nikov, and S.A. Astashkevich for useful discussions. This work was supported by the Russian Foundation for Basic Research, project no. 98-02-18325.
PY - 2000/2
Y1 - 2000/2
N2 - The afterglow of a discharge in helium with a small admixture of hydrogen is studied spectroscopically (p = 40 Torr, [e] ≤ 1011 cm -3). The time-resolved measurements of intensities of the first four lines of the Balmer series are performed. The concentrations of metastable helium atoms and molecules are evaluated from the relative intensity of the absorption lines. The ratios of excitation transfer rates from atoms He(2 3S1) k1(n) and molecules of helium He 2(a 2sσ 3Σu+) k 2(n) to atomic hydrogen H*(n) are measured to be k 1(n = 3)/k2(n = 3) = 0.04 ± 0.02 and k 1(n = 4)/k2(n = 4) = 0.01 ± 0.02. The ratios of excitation rate constants k2(n) corresponding to different states H(n) are measured to be k1(n = 4)/k2(n = 3) = 0.023 ± 0.01; k1(n = 5)/k2(n = 3) ≤ 0.013; and k 1(n = 6)/k2(n = 3) ≤ 0.007.
AB - The afterglow of a discharge in helium with a small admixture of hydrogen is studied spectroscopically (p = 40 Torr, [e] ≤ 1011 cm -3). The time-resolved measurements of intensities of the first four lines of the Balmer series are performed. The concentrations of metastable helium atoms and molecules are evaluated from the relative intensity of the absorption lines. The ratios of excitation transfer rates from atoms He(2 3S1) k1(n) and molecules of helium He 2(a 2sσ 3Σu+) k 2(n) to atomic hydrogen H*(n) are measured to be k 1(n = 3)/k2(n = 3) = 0.04 ± 0.02 and k 1(n = 4)/k2(n = 4) = 0.01 ± 0.02. The ratios of excitation rate constants k2(n) corresponding to different states H(n) are measured to be k1(n = 4)/k2(n = 3) = 0.023 ± 0.01; k1(n = 5)/k2(n = 3) ≤ 0.013; and k 1(n = 6)/k2(n = 3) ≤ 0.007.
UR - http://www.scopus.com/inward/record.url?scp=0011831907&partnerID=8YFLogxK
U2 - 10.1134/1.626770
DO - 10.1134/1.626770
M3 - Article
AN - SCOPUS:0011831907
VL - 88
SP - 151
EP - 157
JO - OPTICS AND SPECTROSCOPY
JF - OPTICS AND SPECTROSCOPY
SN - 0030-400X
IS - 2
ER -
ID: 92877098