FIRST OBSERVATION OF LASER-INDUCED RESONANT ANNIHILATION IN METASTABLE ANTIPROTONIC HELIUM-ATOMS

被引：151

作者：

MORITA, N

KUMAKURA, M

YAMAZAKI, T

WIDMANN, E

MASUDA, H

SUGAI, I

HAYANO, RS

MAAS, FE

TORII, HA

HARTMANN, FJ

DANIEL, H

VONEGIDY, T

KETZER, B

MULLER, W

SCHMID, W

HORVATH, D

EADES, J

机构：

[1] UNIV TOKYO,INST NUCL STUDY,TANASHI,TOKYO 188,JAPAN

[2] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO,TOKYO 113,JAPAN

[3] TECH UNIV MUNICH,DEPT PHYS,D-85747 GARCHING,GERMANY

[4] CERN,CH-1211 GENEVA 23,SWITZERLAND

[5] KFKI,PARTICLE & NUCL PHYS RES INST,H-1525 BUDAPEST,HUNGARY

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.72.1180

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed the first laser-induced resonant transitions in antiprotonic helium atoms. These occur between metastable states and Auger dominated short lived states, and show that the anomalous longevity of antiprotons previously observed in helium media results from the formation of high-n high-l atomic states of He--(p)+. The observed transition with vacuum wavelength 597.259 +/- 0.002 nm is tentatively assigned to (n, l) = (39, 35) --> (38, 34).

引用

页码：1180 / 1183

页数：4

共 17 条

[11] STRUCTURE OF NEUTRAL MESONIC ATOMS FORMED IN LIQUID HELIUM [J].

RUSSELL, JE .

PHYSICAL REVIEW A, 1970, 1 (03) :721-&

[12] DISTORTION OF ELECTRON WAVE FUNCTION IN ALPHAPI-E-, ALPHAKAPPA-E-, AND ALPHARHOBARE- ATOMS [J].

RUSSELL, JE .

PHYSICAL REVIEW A, 1970, 1 (03) :735-&

[13] MOLECULE-LIKE METASTABLE STATES OF ANTIPROTONIC AND MESIC HELIUM [J].

SHIMAMURA, I .

PHYSICAL REVIEW A, 1992, 46 (07) :3776-3788

[14]

SHIMAMURA I, COMMUNICATION

[15]

WIDMANN E, 1993, NUCL PHYS A, V558, pC679, DOI 10.1016/0375-9474(93)90429-2

[16] ATOMIC CORE-POLARIZATION EFFECTS IN METASTABLE HADRONIC HELIUM-ATOMS [J].

YAMAZAKI, T ;

OHTSUKI, K .

PHYSICAL REVIEW A, 1992, 45 (11) :7782-7786

[17] FORMATION OF LONG-LIVED GAS-PHASE ANTIPROTONIC HELIUM-ATOMS AND QUENCHING BY H-2 [J].

YAMAZAKI, T ;

WIDMANN, E ;

HAYANO, RS ;

IWASAKI, M ;

NAKAMURA, SN ;

SHIGAKI, K ;

HARTMANN, FJ ;

DANIEL, H ;

VONEGIDY, T ;

HOFMANN, P ;

KIM, YS ;

EADES, J .

NATURE, 1993, 361 (6409) :238-240

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