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4 papers · 2 filters
Abundance of Ground States with Positive Parity
T. Papenbrock, H. A. Weidenmueller
We investigate analytically and numerically a random-matrix model for m fermions occupying l1 single-particle states with positive parity and l2 single-particle states with negativ…
Random-Matrix Approach to RPA equations. I
X. Barillier-Pertuisel, O. Bohigas, H. A. Weidenmueller
We study the RPA equations in their most general form by taking the matrix elements appearing in the RPA equations as random. This yields either a unitarily or an orthogonally inva…
Quantum time scales in alpha tunneling
N. G. Kelkar, H. M. Castaneda, M. Nowakowski
The theoretical treatment of alpha decay by Gamow is revisited by investigating the quantum time scales in tunneling. The time spent by an alpha particle in front of the barrier an…
Nuclear excitation by electron capture followed by fast x-ray emission
Adriana Pálffy, Zoltán Harman, Christophor Kozhuharov +4
The resonance strength of the two-step process of nuclear excitation by electron capture followed by decay of the nucleus can be significantly increased in highly charged ions…