Mechanism of hot spots formation in pentaerythritol tetranitrate under pulsed laser irradiation

Аннотация

The spectral, kinetic, spatial, and amplitude characteristics of emissions of pressed samples of PETN (pentaerythritole tetranitrate) by the first harmonic of a neodymium laser (1064 nm, 12 ns) are studied. It is found that at the moment of irradiation of PETN by laser pulses, hot spots are formed on the surface of the samples. The energy density of laser radiation varies in the range of 0.5-3 J/cm ² . The characteristics of hot spots are determined by absorbing inhomogeneities and parameters of laser radiation. Multi-pulse excitation leads to the annealing of absorbing irregularities and increased threshold of optical breakdown. The received results are interpreted on the basis of ideas of the low-threshold optical breakdown as evolving within local (defective) regions of the PETN in the electric field of the light wave.

Язык оригинала	Английский
Номер статьи	012020
Журнал	IOP Conference Series: Materials Science and Engineering
Том	510
Номер выпуска	1
DOI	https://doi.org/10.1088/1757-899X/510/1/012020
Состояние	Опубликовано - 24 апр 2019
Событие	7th International Conference for Young Scientists on High Technology: Research and Applications 2018, HTRA 2018 - Tomsk, Российская Федерация Продолжительность: 26 ноя 2018 → 30 ноя 2018

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

Доступ к документу

10.1088/1757-899X/510/1/012020

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Mechanism of hot spots formation in pentaerythritol tetranitrate under pulsed laser irradiation. / Oleshko, V. I.; Tsipilyov, V. P.; Zarko, V. E.; Yakovlev, A. N.; Mazur, M. A.

В: IOP Conference Series: Materials Science and Engineering, Том 510, № 1, 012020, 24.04.2019.

Результат исследований: Материалы для журнала › рецензирование

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title = "Mechanism of hot spots formation in pentaerythritol tetranitrate under pulsed laser irradiation",

abstract = " The spectral, kinetic, spatial, and amplitude characteristics of emissions of pressed samples of PETN (pentaerythritole tetranitrate) by the first harmonic of a neodymium laser (1064 nm, 12 ns) are studied. It is found that at the moment of irradiation of PETN by laser pulses, hot spots are formed on the surface of the samples. The energy density of laser radiation varies in the range of 0.5-3 J/cm 2 . The characteristics of hot spots are determined by absorbing inhomogeneities and parameters of laser radiation. Multi-pulse excitation leads to the annealing of absorbing irregularities and increased threshold of optical breakdown. The received results are interpreted on the basis of ideas of the low-threshold optical breakdown as evolving within local (defective) regions of the PETN in the electric field of the light wave. ",

author = "Oleshko, {V. I.} and Tsipilyov, {V. P.} and Zarko, {V. E.} and Yakovlev, {A. N.} and Mazur, {M. A.}",

year = "2019",

month = apr,

day = "24",

doi = "10.1088/1757-899X/510/1/012020",

language = "English",

volume = "510",

journal = "IOP Conference Series: Materials Science and Engineering",

issn = "1757-8981",

publisher = "IOP Publishing Ltd.",

number = "1",

note = "7th International Conference for Young Scientists on High Technology: Research and Applications 2018, HTRA 2018 ; Conference date: 26-11-2018 Through 30-11-2018",

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TY - JOUR

T1 - Mechanism of hot spots formation in pentaerythritol tetranitrate under pulsed laser irradiation

AU - Oleshko, V. I.

AU - Tsipilyov, V. P.

AU - Zarko, V. E.

AU - Yakovlev, A. N.

AU - Mazur, M. A.

PY - 2019/4/24

Y1 - 2019/4/24

N2 - The spectral, kinetic, spatial, and amplitude characteristics of emissions of pressed samples of PETN (pentaerythritole tetranitrate) by the first harmonic of a neodymium laser (1064 nm, 12 ns) are studied. It is found that at the moment of irradiation of PETN by laser pulses, hot spots are formed on the surface of the samples. The energy density of laser radiation varies in the range of 0.5-3 J/cm 2 . The characteristics of hot spots are determined by absorbing inhomogeneities and parameters of laser radiation. Multi-pulse excitation leads to the annealing of absorbing irregularities and increased threshold of optical breakdown. The received results are interpreted on the basis of ideas of the low-threshold optical breakdown as evolving within local (defective) regions of the PETN in the electric field of the light wave.

AB - The spectral, kinetic, spatial, and amplitude characteristics of emissions of pressed samples of PETN (pentaerythritole tetranitrate) by the first harmonic of a neodymium laser (1064 nm, 12 ns) are studied. It is found that at the moment of irradiation of PETN by laser pulses, hot spots are formed on the surface of the samples. The energy density of laser radiation varies in the range of 0.5-3 J/cm 2 . The characteristics of hot spots are determined by absorbing inhomogeneities and parameters of laser radiation. Multi-pulse excitation leads to the annealing of absorbing irregularities and increased threshold of optical breakdown. The received results are interpreted on the basis of ideas of the low-threshold optical breakdown as evolving within local (defective) regions of the PETN in the electric field of the light wave.

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