Dependence on laser intensity and pulse duration in proton acceleration by irradiation of ultrashort laser pulses on a Cu foil target
Dependence on laser intensity and pulse duration in proton acceleration by irradiation of ultrashort laser pulses on a Cu foil target
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DOI：
10.1063/1.1943436
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发表时间：
2005-06
影响因子：
2.2
通讯作者：
Y. Oishi;T. Nayuki;T. Fujii;Y. Takizawa;X. Wang;T. Yamazaki;K. Nemoto;T. Kayoiji;T. Sekiya;K. Horioka;Y. Okano;Y. Hironaka;K. Nakamura;K. Kondo;A. Andreev
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文献类型：
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作者：
Y. Oishi;T. Nayuki;T. Fujii;Y. Takizawa;X. Wang;T. Yamazaki;K. Nemoto;T. Kayoiji;T. Sekiya;K. Horioka;Y. Okano;Y. Hironaka;K. Nakamura;K. Kondo;A. Andreev
测量了超短激光脉冲在5μm厚铜带靶上辐照高能质子加速过程中对激光强度和脉冲时间的依赖关系。激光强度为8.5×1017W∕cm2 ~ 1.1×1019W∕cm2，脉冲持续时间为55 ~ 400 fs。在激光强度一定的情况下，随着脉冲持续时间的增加，质子的最大能量增加。质子最大能量与激光强度和脉冲持续时间的关系与等离子体膨胀分析模型一致。
The dependence on laser intensity and pulse duration in energetic proton acceleration by irradiation of ultrashort laser pulses on a 5μm thick copper tape target was measured. The laser intensity was varied from 8.5×1017W∕cm2 to 1.1×1019W∕cm2, and the pulse duration from 55 fs to 400 fs. The maximum proton energy increased as the pulse duration was increased while the laser intensity was kept constant. The dependence of the maximum proton energy on laser intensity and pulse duration was in good agreement with an analytical plasma-expanding model.