About power thresholds, criteria, kinetics and mechanisms of ignition of explosives by laser pulses and pulsed electron beams
| Parent link: | Известия вузов. Физика: научный журнал/ Национальный исследовательский Томский государственный университет (ТГУ).— , 1957- Т. 49, № 10.— 2006.— [С. 200-203] |
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| Outros autores: | , , , |
| Summary: | Заглавие с экрана Authors of this work carry out the analysis of applicability frameworks of various ignition criteria for modelling representatives of initiating explosives, secondary explosives and pyrotechnic mixed structures. It is established, that ignition criterion is energy of a pulse which value corresponds 50 % of ignition probability at short time of influences and the small sizes of a beam on a surface of substance, and in case a large sizes of beam - density of energy. In the field of long time the ignition criterion is power or density of power accordingly. It is necessary to understand values of energy W05 as power thresholds of ignition (PTI), density of energy Н05, capacities I05 and density of capacity q05, corresponding to 50% of a level on a probability curve of initiation. Which of these parameters is most informative depends that is criterion of ignition in different experimental situation. PTI is complex function of many parameters (duration of an influencing pulse τp, characteristic relaxation time of external excitation tr, diameter of a beam dn, refraction n 0, absorption μ and dispersion β coefficients of explosives, density of substance, dispersivity of explosive powders, pressure of molding and mass molding of explosive powders) and this circumstance is the reason of strongly difference in value of thresholds of various authors in experiences. In turn, criteria of ignition are determined by ratio between space-time parameters of an external influencing pulse and space-time scales of relaxation, which are typical for investigated sample in concrete conditions of experience. Some results of study of PTI at condition dependence on extended influence are presented in Fig. 1. |
| Idioma: | inglés |
| Publicado: |
2006
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| Subjects: | |
| Acceso en liña: | http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.630.4611&rep=rep1&type=pdf |
| Formato: | Electrónico Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=649873 |
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| 200 | 1 | |a About power thresholds, criteria, kinetics and mechanisms of ignition of explosives by laser pulses and pulsed electron beams |f V. M. Lisitsyn [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Заглавие с экрана | ||
| 320 | |a [References: p. 203 (7 tit.) | ||
| 330 | |a Authors of this work carry out the analysis of applicability frameworks of various ignition criteria for modelling representatives of initiating explosives, secondary explosives and pyrotechnic mixed structures. It is established, that ignition criterion is energy of a pulse which value corresponds 50 % of ignition probability at short time of influences and the small sizes of a beam on a surface of substance, and in case a large sizes of beam - density of energy. In the field of long time the ignition criterion is power or density of power accordingly. It is necessary to understand values of energy W05 as power thresholds of ignition (PTI), density of energy Н05, capacities I05 and density of capacity q05, corresponding to 50% of a level on a probability curve of initiation. Which of these parameters is most informative depends that is criterion of ignition in different experimental situation. PTI is complex function of many parameters (duration of an influencing pulse τp, characteristic relaxation time of external excitation tr, diameter of a beam dn, refraction n 0, absorption μ and dispersion β coefficients of explosives, density of substance, dispersivity of explosive powders, pressure of molding and mass molding of explosive powders) and this circumstance is the reason of strongly difference in value of thresholds of various authors in experiences. In turn, criteria of ignition are determined by ratio between space-time parameters of an external influencing pulse and space-time scales of relaxation, which are typical for investigated sample in concrete conditions of experience. Some results of study of PTI at condition dependence on extended influence are presented in Fig. 1. | ||
| 461 | |t Известия вузов. Физика |o научный журнал |f Национальный исследовательский Томский государственный университет (ТГУ) |d 1957- | ||
| 463 | |t Т. 49, № 10 |v [С. 200-203] |d 2006 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a лазерные импульсы | |
| 610 | 1 | |a взрывчатые вещества | |
| 610 | 1 | |a кинетика | |
| 701 | 1 | |a Lisitsyn |b V. M. |c physicist |c Russian physicist |c Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1939- |g Viktor Mikhailovich |3 (RuTPU)RU\TPU\pers\28330 |9 13239 | |
| 701 | 1 | |a Oleshko |b V. I. |c specialist in the field of lightning engineering |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1948- |g Vladimir Ivanovich |3 (RuTPU)RU\TPU\pers\33783 |9 17381 | |
| 701 | 1 | |a Tsipilev |b V. P. |c specialist in the field of lightning engineering |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1940- |g Vladimir Papilovich |3 (RuTPU)RU\TPU\pers\33782 |9 17380 | |
| 701 | 1 | |a Yakovlev |b A. N. |c specialist in the field of lightning engineering |c Vice-rector-Director of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1971- |g Aleksey Nikolaevich |3 (RuTPU)RU\TPU\pers\31580 |9 15740 | |
| 801 | 2 | |a RU |b 63413507 |c 20161212 |g RCR | |
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