EXTREMELY COLD ANTIPROTONS FOR ANTIHYDROGEN PRODUCTION

被引：19

作者：

GABRIELSE, G ^{[1
]}

JHE, W ^{[1
]}

PHILLIPS, D ^{[1
]}

QUINT, W ^{[1
]}

TSENG, C ^{[1
]}

HAARSMA, L ^{[1
]}

ABDULLAH, K ^{[1
]}

GROBNER, J ^{[1
]}

KALINOWSKY, H ^{[1
]}

机构：

[1] UNIV MAINZ,INST PHYS,W-6500 MAINZ,GERMANY

来源：

HYPERFINE INTERACTIONS | 1993年 / 76卷 / 1-4期

关键词：

D O I：

10.1007/BF02316708

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The possibility to produce, trap and study antihydrogen atoms rests upon the recent availability of extremely cold antiprotons in a Penning trap. Over the last five years, our TRAP Collaboration has slowed, cooled and stored antiprotons at energies 10(10) lower than was previously possible. The storage time exceeds 3.4 months despite the extremely low energy, which corresponds to 4.2 K in temperature units. The first example of measurements which become possible with extremely cold antiprotons is a comparison of the antiproton inertial masses which shows they are the same to a fractional accuracy of 4 x 10(-8). (This is 1000 times more accurate than previous comparisons and large additional increases in accuracy are anticipated.) To increase the number of trapped antiprotons available for antihydrogen production, we have demonstrated that we can accumulate or ''stack'' antiprotons cooled from successive pulsed injections into our trap.

引用

页码：81 / 93

页数：13

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