Generating positrons with femtosecond-laser pulses

被引：205

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].

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页码：2662 / 2664

页数：3

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