Observation of low-lying resonance states of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>at the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>S and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>S He thresholds

Báder, A.; Sarkadi, L.; Víkor, L.; Kuzel, M.; Závodszky, Péter; Jalowy, T.; O. Groeneveld, K.; A. Macri, P.; O Barrachina, R

doi:10.1103/physreva.55.r14

Public

Observation of low-lying resonance states ofHe−at the21S and23S He thresholds

Published in Physical Review A • Jan 1, 1997

Authors:

A. Báder

L. Sarkadi

L. Víkor

Abstract

We measured the cusp electron production associated with target ionization at the impact of a 400-keV pure2${\mathrm{}}^{3}$S He beam and a mixed beam containing all three long-lived He states, i.e., 1${\mathrm{}}^{1}$S,n2${\mathrm{}}^{1}$S, and 2${\mathrm{}}^{3}$S. Using the results of an earlier e...

Subject

Physics

Metastability

Atomic physics

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