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Systematics of proton emission
D S Delion1, R J Liotta, R Wyss
1National Institute of Physics and Nuclear Engineering, POB MG-6, Bucharest-Măgurele, Romania.
Physical Review Letters
|April 12, 2006
Summary
A new formula simplifies proton decay analysis by linking half-life to the Coulomb parameter. Experimental data reveal distinct nuclear shapes, aiding quantum number assignment for proton emitters.
Area of Science:
- Nuclear Physics
- Quantum Mechanics
- Radioactive Decay
Background:
- Proton decay is a key process in nuclear physics.
- Understanding half-life and decay mechanisms is crucial.
- Nuclear shape and deformation influence decay properties.
Purpose of the Study:
- To present a simple formula relating proton decay half-life to the Coulomb parameter.
- To analyze experimental data for proton decay processes.
- To establish a method for assigning quantum numbers to proton emitters.
Main Methods:
- Developed a formula connecting logarithm of half-life (corrected for centrifugal barrier) with the Coulomb parameter.
- Analyzed experimental data of proton decay.
- Observed trends in data related to nuclear shape changes.
Main Results:
- The formula shows a relationship between half-life and Coulomb parameter.
- Experimental data exhibit two distinct linear trends.
- These trends correlate with sudden changes in nuclear shape and deformation regions.
- The observed phenomenon is independent of the outgoing proton's angular momentum.
Conclusions:
- The presented formula offers a simplified approach to studying proton decay.
- The distinct linear trends in data indicate specific nuclear deformation regions.
- This finding provides a powerful experimental tool for assigning quantum numbers in proton emitters.