Observation of Perturbations in the Probabilities of the GK 1Σ+ g → B 1Σ+ u Spontaneous Transitions of the H2 Molecule: Rotational Branching Ratios

S. A. Astashkevich, M. V. Kalachev, B. P. Lavrov

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

6 Цитирования (Scopus)


The line strength ratios for the R and P branches (the rotational branching ratios) are measured for the first time for the GK 1Σ+ g, v′, J′ → B 1Σ+ u, v″, J″ spontaneous transitions of the H2 molecule. Values of 73 branching ratios for 18 different (v′-v″) bands with the rotational quantum numbers J′ = 1-9 and vibrational quantum numbers v′ = 0-3 and v″ = 0-7 are obtained. Significant discrepancies (exceeding a factor of 20-30) are found between the experimental data and the results of calculation in the adiabatic approximation using the Hönl-London factors and taking into account the effect of vibrational-rotational interaction in the vibrational wave functions of combining states. These perturbations are more significant than those observed in our previous work for transitions from levels of both the triplet 3p complex of terms and the singlet and triplet 3d complexes of terms of the hydrogen molecule. It was established that the effects of perturbation in the rotational branching ratios strongly depend not only on values of J′ for separate vibronic bands, but also on values of v′ and v″ for fixed values of J′.

Язык оригиналаанглийский
Страницы (с-по)212-218
Число страниц7
ЖурналOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Номер выпуска2
СостояниеОпубликовано - 1 авг 1999

Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Атомная и молекулярная физика и оптика


Подробные сведения о темах исследования «Observation of Perturbations in the Probabilities of the GK <sup>1</sup>Σ<sup>+</sup> <sub>g</sub> → B <sup>1</sup>Σ<sup>+</sup> <sub>u</sub> Spontaneous Transitions of the H<sub>2</sub> Molecule: Rotational Branching Ratios». Вместе они формируют уникальный семантический отпечаток (fingerprint).