Abstract
In this work, the generation of a super-short avalanche electron beam (SAEB) in SF6 in an inhomogeneous electric field is studied on two generators with pulse rise times of 0.5 and 2 ns, respectively. The SAEB parameters in SF6 are compared with those obtained in other gases (air, nitrogen, argon, and krypton). It is shown that the SAEB amplitude in SF6 at pressures ranging from 0.05 to 0.2 MPa is commensurable with that in krypton and is much lower than that in air and nitrogen. It is also found that in SF6, SF6 mixture with 2.5% of nitrogen, and other gases, a diffuse discharge is ignited not only at negative polarity but also at positive polarity of the electrode with small curvature radius. Furthermore, the velocity of the ionization wave front in SF6 in an inhomogeneous electric field is studied. Experimental results show that the velocity of the ionization wave front in SF6 is lower than that in air and nitrogen as well as such velocity decreases when the pressure increases from 0.05 to 0.3 MPa in all gases.
| Original language | English |
|---|---|
| Pages (from-to) | 331-341 |
| Number of pages | 11 |
| Journal | Laser and Particle Beams |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 28 Jan 2014 |
| Externally published | Yes |
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Keywords
- Nanosecond pulse
- Runaway electrons
- Super-short avalanche electron beam
- Velocity of the ionization wave front
ASJC Scopus subject areas
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering
Cite this
Generation of super-short avalanche electron beams in SF6. / Zhang, Cheng; Tarasenko, Victor F.; Shao, Tao; Beloplotov, Dmitry V.; Lomaev, Mikhail I.; Sorokin, Dmitry A.; Yan, Ping.
In: Laser and Particle Beams, Vol. 32, No. 2, 28.01.2014, p. 331-341.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Generation of super-short avalanche electron beams in SF6
AU - Zhang, Cheng
AU - Tarasenko, Victor F.
AU - Shao, Tao
AU - Beloplotov, Dmitry V.
AU - Lomaev, Mikhail I.
AU - Sorokin, Dmitry A.
AU - Yan, Ping
PY - 2014/1/28
Y1 - 2014/1/28
N2 - In this work, the generation of a super-short avalanche electron beam (SAEB) in SF6 in an inhomogeneous electric field is studied on two generators with pulse rise times of 0.5 and 2 ns, respectively. The SAEB parameters in SF6 are compared with those obtained in other gases (air, nitrogen, argon, and krypton). It is shown that the SAEB amplitude in SF6 at pressures ranging from 0.05 to 0.2 MPa is commensurable with that in krypton and is much lower than that in air and nitrogen. It is also found that in SF6, SF6 mixture with 2.5% of nitrogen, and other gases, a diffuse discharge is ignited not only at negative polarity but also at positive polarity of the electrode with small curvature radius. Furthermore, the velocity of the ionization wave front in SF6 in an inhomogeneous electric field is studied. Experimental results show that the velocity of the ionization wave front in SF6 is lower than that in air and nitrogen as well as such velocity decreases when the pressure increases from 0.05 to 0.3 MPa in all gases.
AB - In this work, the generation of a super-short avalanche electron beam (SAEB) in SF6 in an inhomogeneous electric field is studied on two generators with pulse rise times of 0.5 and 2 ns, respectively. The SAEB parameters in SF6 are compared with those obtained in other gases (air, nitrogen, argon, and krypton). It is shown that the SAEB amplitude in SF6 at pressures ranging from 0.05 to 0.2 MPa is commensurable with that in krypton and is much lower than that in air and nitrogen. It is also found that in SF6, SF6 mixture with 2.5% of nitrogen, and other gases, a diffuse discharge is ignited not only at negative polarity but also at positive polarity of the electrode with small curvature radius. Furthermore, the velocity of the ionization wave front in SF6 in an inhomogeneous electric field is studied. Experimental results show that the velocity of the ionization wave front in SF6 is lower than that in air and nitrogen as well as such velocity decreases when the pressure increases from 0.05 to 0.3 MPa in all gases.
KW - Nanosecond pulse
KW - Runaway electrons
KW - Super-short avalanche electron beam
KW - Velocity of the ionization wave front
UR - http://www.scopus.com/inward/record.url?scp=84938300195&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938300195&partnerID=8YFLogxK
U2 - 10.1017/S0263034614000147
DO - 10.1017/S0263034614000147
M3 - Article
VL - 32
SP - 331
EP - 341
JO - Laser and Particle Beams
JF - Laser and Particle Beams
SN - 0263-0346
IS - 2
ER -