Специализация: 010700 Физика атомов и молекул
Программа: 010700/02 39 Атомная и молекулярная физика 
Руководитель программы: проф. В. А. Иванов
Кафедра оптики
Научный руководитель: доц. Ю. Э. Скобло
Рецензент: доц. А. А. Пастор

Study of the population processes of neon atom  – excited states in helium-neon mixture
A.S. Petrovskaya

In this work the spectroscopic study of the population processes of the neon atom  states was carried out in the decaying He-Ne plasma containing small amount of Ne (). The plasma was created by an impulse discharge in the glass tube at pressure 38 Torr. The tube diameter was 2cm, the tube length was 25 cm.
The following results were obtained:
1. The main population process of neon atom  state (Pasсhen’s notation) is the excitation transfer reaction during the discharge phase and the first 100μs of the afterglow phase:
.							(1)
This process plays more important role in the population of  state than in the population of other states of  configuration (, , ).
2. During the discharge phase the main source of neon atoms in the , , ,  states is the threshold process of dissociative recombination of electrons with molecular ions  in ground vibrational state:
.							(2)
During the afterglow phase dissociative recombination of ions  with electrons is the main population mechanism of , , ,  states:
								(3)
Thus, it confirms the assumption (made in the previous papers) that during the afterglow phase at the conditions under consideration the state  is populated mainly by the dissociative recombination (3). The process (3) is the main source of  level population in later afterglow when the number density of  atoms is negligible.
3. Measurements of intensities of spectral lines were made in the afterglow with the heating pulse. As a result, the dependencies of electron-ion recombination rates on the electron temperature were obtained in the range =(0.03-0.45)eV. At low temperatures =(0.03-0.20)eV these dependencies are close to . They correspond to the process (3). At high temperatures =(0.20-0.45)eV the growing dependencies corresponding to the process (2) were obtained. 

The list of the publications
1. A.S.Petrovskaya, K.Miculis, N.N.Bezuglov, A.N.Klucharev, A.Ekers. Cross section of collision Penning ionization of two Rb Rydberg atoms. MOLEC-2008 XVII European Conference on Dynamic of Molecular Systems.p.86. Russia, St.Peterburg, August 23-28, 2008.
2. А.С.Петровская, Г.В.Жувикин. Энтропия фойгтовского распределения. Тезисы докладов молодежной научной конференции Физика и Прогресс. с.57. к 110-летию со дня рождения В.А.Фока Санкт-Петербург, 19-21 ноября, 2008.