Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Relaxation times measurement in single and multiply excited xenon clusters. / Сердобинцев, Павел Юрьевич; Мельников, Алексей; Пастор, Александр Александрович; Тимофеев, Николай Александрович; Ходорковский, Михаил Алексеевич.
в: Journal of Chemical Physics, Том 148, № 19, 194301, 21.05.2018, стр. 1-16.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Relaxation times measurement in single and multiply excited xenon clusters
AU - Сердобинцев, Павел Юрьевич
AU - Мельников, Алексей
AU - Пастор, Александр Александрович
AU - Тимофеев, Николай Александрович
AU - Ходорковский, Михаил Алексеевич
N1 - Funding Information: This work was supported in part by Russian Federation Grant No. 3.8742.2017/8.9 and by SPbSU Grant No. 11.40.533.2017. The equipment of the Resource Center “Physical Methods of Surface Investigation” of the St. Petersburg State University was used in experiments.
PY - 2018/5/21
Y1 - 2018/5/21
N2 - Direct measurement of the rates of nonradiative relaxation processes in electronically excited xenon clusters were carried out. The clusters were created in a pulsed supersonic beam and twophoton excited by femtosecond laser pulses with a wavelength of 263 nm. The measurements were performed using the pump-probe method and electron spectroscopy. It is shown thatrelaxation of light clusters XeN (N < 15) predominantly occurs by desorption of excited xenon atoms with a characteristic time constant of 3 ps. Heavier electronically excited clusters (N> 10) vibrationally relax to the lowest electronically excited state at a rate of about 0.075 eV / ps. Multiply excited clusters are deactivated via energy exchange between excited centers with theionization of one of them. The production of electrons in this process occurs with a delay of ~ 4 ps from the pump pulse, and the process is completed in 10 ps.
AB - Direct measurement of the rates of nonradiative relaxation processes in electronically excited xenon clusters were carried out. The clusters were created in a pulsed supersonic beam and twophoton excited by femtosecond laser pulses with a wavelength of 263 nm. The measurements were performed using the pump-probe method and electron spectroscopy. It is shown thatrelaxation of light clusters XeN (N < 15) predominantly occurs by desorption of excited xenon atoms with a characteristic time constant of 3 ps. Heavier electronically excited clusters (N> 10) vibrationally relax to the lowest electronically excited state at a rate of about 0.075 eV / ps. Multiply excited clusters are deactivated via energy exchange between excited centers with theionization of one of them. The production of electrons in this process occurs with a delay of ~ 4 ps from the pump pulse, and the process is completed in 10 ps.
KW - xenon cluster, excited states, pulsed supersonic beam, two-photon excitation, femtosecond laser pulse
KW - RARE-GAS CLUSTERS
KW - XE CLUSTERS
KW - SPECTROSCOPY
KW - KRYPTON
KW - ARGON
KW - PHOTOIONIZATION
KW - FRAGMENTATION
KW - IONIZATION
KW - SOLIDS
KW - STATES
UR - http://www.scopus.com/inward/record.url?scp=85047263318&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/relaxation-times-measurement-single-multiply-excited-xenon-clusters
U2 - 10.1063/1.5025274
DO - 10.1063/1.5025274
M3 - Article
VL - 148
SP - 1
EP - 16
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 19
M1 - 194301
ER -
ID: 27610534