Relaxation times measurement in single and multiply excited xenon clusters: Измерение времен релаксации однократно и многократно возбужденных кластеров ксенона

Николай Александрович Тимофеев, Александр Александрович Пастор, Павел Юрьевич Сердобинцев, Михаил Алексеевич Ходорковский, Алексей Мельников

Research output

Abstract

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.
Original languageEnglish
Article numberDOI: 10.1063/1.5025274
Pages (from-to)1-16
Number of pages16
JournalJournal of Chemical Physics
Volume148
Issue number19
Publication statusPublished - 16 May 2018

Scopus subject areas

  • Physics and Astronomy(all)

Cite this

@article{776368b518324c7a86d4eb1d043bf54a,
title = "Relaxation times measurement in single and multiply excited xenon clusters: Измерение времен релаксации однократно и многократно возбужденных кластеров ксенона",
abstract = "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.",
keywords = "xenon cluster, excited states, pulsed supersonic beam, two-photon excitation, femtosecond laser pulse",
author = "Тимофеев, {Николай Александрович} and Пастор, {Александр Александрович} and Сердобинцев, {Павел Юрьевич} and Ходорковский, {Михаил Алексеевич} and Алексей Мельников",
year = "2018",
month = "5",
day = "16",
language = "English",
volume = "148",
pages = "1--16",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics",
number = "19",

}

TY - JOUR

T1 - Relaxation times measurement in single and multiply excited xenon clusters

T2 - Измерение времен релаксации однократно и многократно возбужденных кластеров ксенона

AU - Тимофеев, Николай Александрович

AU - Пастор, Александр Александрович

AU - Сердобинцев, Павел Юрьевич

AU - Ходорковский, Михаил Алексеевич

AU - Мельников, Алексей

PY - 2018/5/16

Y1 - 2018/5/16

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

M3 - Article

VL - 148

SP - 1

EP - 16

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 19

M1 - DOI: 10.1063/1.5025274

ER -