Double-decker femtosecond electron beam accelerator for pulse radiolysis

被引：12

作者：

Yang, JF ^{[1
]}

Kondoh, T ^{[1
]}

Yoshida, A ^{[1
]}

Yoshida, Y ^{[1
]}

机构：

[1] Osaka Univ, ISIR, Osaka 5670047, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2006年 / 77卷 / 04期

关键词：

D O I：

10.1063/1.2195090

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new concept of double-decker electron beam accelerator based on a photocathode radio-frequency (rf) gun was proposed for studying chemical kinetics and primary processes or reactions of radiation chemistry. The synchronized double-decker electron beams with time interval of 1.4 ns were generated in the rf gun by injecting two laser beams on the photocathode. The double-decker electron beams were accelerated by a booster linear accelerator (linac) up to 31.8 MeV with energy-phase correlation and compressed into femtosecond by rotating the bunch in the energy-phase distribution in magnetic fields. The normalized transverse emittance of both beams downstream of the linac was obtained to be 2.5 +/- 0.6 mm mrad for the up beam with bunch charge of 0.47 nC and 3.6 +/- 0.7 mm mrad for the down beam with bunch charge of 0.65 nC. The minimum relative energy spread was (0.14 +/- 0.03)% for the two beams. The compressed bunch length was obtained to be 430 +/- 25 fs for the up bunch and 510 +/- 20 fs for the down bunch. (c) 2006 American Institute of Physics.

引用

页数：5

共 20 条

[1] DESIGN AND PERFORMANCE OF A PULSE RADIOLYSIS SYSTEM CAPABLE OF PICOSECOND TIME RESOLUTION [J].