| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Efficient electron heating in nitrogen clusters irradiated with intense femtosecond laser pulses |
|
言語 |
en |
| 作成者 |
Namba, Shinichi
Hasegawa, Noboru
Nagashima, Keisuke
Kawachi, Tetsuya
Kishimoto, Maki
Sukegawa, Kouta
Takiyama, Ken
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2006 The American Physical Society. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
nitrogen |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
atomic clusters |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
plasma production by laser |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
plasma density |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
plasma jets |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
plasma interactions |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
high-speed optical techniques |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
plasma simulation |
| 内容記述 |
|
|
内容記述 |
Properties of nitrogen cluster plasmas produced by an intense, ultrashort laser pulse have been investigated numerically and experimentally. The classical dynamics simulations show that on increasing the cluster size a plasma with residual electron energy above 1 keV can be created due to collisional heating, which is considerably higher than the value obtained with a conventional low-density gas target. Experimentally, nitrogen gas jets created by two types of nozzles were irradiated with a laser pulse of 55 fs, up to 1.2× 1017 / cm2. A seeded gas jet consisting of nitrogen and helium was also employed to promote the production of large clusters. The influences of the shape of nozzle, the seeded gas, and the gas jet stagnation pressure on the properties of plasmas were examined by spectroscopic observations. K -shell emissions showed that for the gas jet using the conical nozzle the electrons underwent intense collisional heating within the large clusters, resulting in the production of highly charged ions. In contrast, the emissions observed with the capillary nozzle exhibited the characteristics of a cold plasma without suffering substantial electron heating, indicating the absence of large clusters. That is, the differences between the two types of nozzles in the efficiency of electron heating and subsequent residual energies after the passage of the laser pulse, which are strongly dependent upon the cluster size, drastically changed the properties of the produced plasmas. The reason that for the capillary gas jet the plasma density deduced from the recombination spectra was significantly higher than the value obtained using the conical nozzle is also given by the difference in residual electron energy. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
American Physical Society |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1103/PhysRevA.73.013205 |
| 関連情報 |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1103/PhysRevA.73.013205 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1050-2947 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10764867 |
| 開始ページ |
|
|
開始ページ |
013205-1 |
| 書誌情報 |
Physical Review A - Atomic, Molecular, and Optical Physics
Physical Review A - Atomic, Molecular, and Optical Physics
巻 73,
号 1,
p. 013205-1-013205-10,
発行日 2006-01-31
|
| 旧ID |
19383 |
PhysRevA_73_013205.pdf (238.7 KB)
