Degree of ionization in antiprotonic noble gases

1 November 1988

journal article
research article
Published by American Physical Society (APS) in Physical Review A

Vol. 38 (9) , 4395-4404
https://doi.org/10.1103/physreva.38.4395

Abstract

The ionization of antiprotonic noble-gas atoms due to formation and Auger deexcitation was investigated. The experiment was performed at low target pressures (p≤50 hPa) in order to prevent electron refilling from neighboring atoms. For this reason, the cyclotron trap was used. This device is designed to stop as many particles as possible in a small stop volume at even low gas pressure. The degree of ionization was determined in antiprotonic neon, argon, and krypton by means of measuring yields of circular radiative transitions at relatively high principal quantum numbers. X rays were observed between 1.6 and 21.0 keV using a Si(Li) detector. Complete ionization was found in all three cases.

Keywords

This publication has 40 references indexed in Scilit:

New Precision Determination of the $π^{-}$ Mass from Pionic X Rays
Physical Review Letters, 1986
The neutral weak current in muonic atoms
Physics Reports, 1985
μ-Mesic X-rays
Nuclear Physics A, 1980
$2 S_{\frac{1}{2}} \to 1 S_{\frac{1}{2}} + one - photon$ decay of muonic atoms and parity-violating neutral-current interactions
Physical Review D, 1974
Parity violations by neutral currents in muonic atoms
Physics Letters B, 1974
Atomic Aftereffects and the Line Shape of Muonic X Rays
Physical Review A, 1973
Electron Screening in Muonic Atoms
Physical Review A, 1973
On the screening of muons by electrons in muonie atoms
Lettere al Nuovo Cimento (1971-1985), 1969
The Auger Effect and Negative Meson Capture
Proceedings of the Physical Society. Section A, 1954
The Capture of Negative Mesotrons in Matter
Physical Review B, 1947