Competition between the decay channels of the Vertical Bar2s/sub 1/2/ > level of the mesoatom and the possibility of observing effects due to neutral currents

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6548188

Grechukhin, D P; Soldatov, A A

For mesoatoms in the region 6< or = Z< or = 17 we calculate the intensities of the satellite lines shifted from the line h..omega../sub 0/ by an amount deltah..omega... The line h..omega../sub 0/ is due to the (2s ..-->.. 1s) mesonic transition and contains information on the weak neutral moun-nucleus interaction, while the quantity deltah..omega.. is equal to the energy of the dipole transition in the electron shell of the mesoatom. The dependences of the intensities of groups of strongly and weakly shifted satellites on the shell occupation are determined. The probabilities of the conversion E0(2s ..-->.. 1s) and E1(2s ..-->.. 2p) meson transitions are obtained. It is shown that in the region 6< or = Z< or =11 the capture of at least one electron into the L shell causes the yield of h..omega../sub 0/ quanta per mesic-atom production in the Vertical Bar2s/sub 1/2/> state to decrease to about 10/sup -5/. An empirical method of searching for a situation in which the electron does not undergo capture into the L shell during a time approx.10/sup -10/ sec is discussed. The decay processes are studied in detail for the Vertical Bar2s/sub 1/2/> state of the mesoatom (..mu..Na), which together with (..mu..Ne) can be considered a suitable system for observing neutral current effects, since in these mesoatoms the total intensity of the nondiscriminated group of weakly shifted satellites for all the shell configurations no longer greatly exceeds the intensity of the informative line h..omega../sub 0/, while the effect of parity nonconservation is still sizeable.

• Research Organization: I.V. Kurchatov Institute of Atomic Energy
• OSTI ID: 6548188
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 31:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

640303* -- Atomic
Molecular &amp; Chemical Physics-- Positronium
Muonium
&amp; Muonic &amp; Mesic Atoms &amp; Molecules
74 ATOMIC AND MOLECULAR PHYSICS
ALGEBRAIC CURRENTS
ATOMS
CONVERSION
CURRENTS
DECAY
E0-TRANSITIONS
E1-TRANSITIONS
ENERGY-LEVEL TRANSITIONS
HADRONIC ATOMS
INTERNAL CONVERSION
MESIC ATOMS
MULTIPOLE TRANSITIONS
NEUTRAL CURRENTS