Generating positrons with femtosecond-laser pulses

被引：207
作者：
Gahn, C [1 ]
Tsakiris, GD
Pretzler, G
Witte, KJ
Delfin, C
Wahlström, CG
Habs, D
机构：
[1] Max Planck Inst Quantenopt, D-85748 Garching, Germany
[2] Lund Inst Technol, Dept Phys, S-22100 Lund, Sweden
[3] LMU Munchen, Sekt Phys, D-85748 Garching, Germany
来源：
APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 17期
关键词：
D O I：
10.1063/1.1319526
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Utilizing a femtosecond table-top laser system, we have succeeded in converting via electron acceleration in a plasma channel, low-energy photons into antiparticles, namely positrons. The average intensity of this source of positrons is estimated to be equivalent to 2x10(8) Bq and it exhibits a very favorable scaling for higher laser intensities. The advent of positron production utilizing femtosecond laser pulses may be the forerunner to a table-top positron source appropriate for applications in material science, and fundamental physics research like positronium spectroscopy. (C) 2000 American Institute of Physics. [S0003-6951(00)00143-1].
引用
收藏
页码：2662 / 2664
页数：3
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