Internal bremsstrahlung spectrum of (_37^86)Rb for forbidden beta transition

Many researchers have worked on explaining the theory of the internal bremsstrahlung process released along with a beta particle and a neutrino from the beta-decaying radioactive nuclei. According to the original Knipp, Uhlenbeck, and Bloch (KUB) theory, IB is a low-intensity continuous spectrum of electromagnetic radiation that accompanies all types of beta decay. Former experimental studies on the internal bremsstrahlung emission from the forbidden beta transitions have shown marked deviations from the theoretical calculations. We took the more theoretical calculations for the IB probability problem. The analytical expressions proposed by the work of Chang and Falkoff for forbidden transitions were used for the IB spectrum. We have also calculated the Coulomb effects of the IB spectrum from the study by Lewis and Ford who first addressed these phenomena. We have handled and analyzed the data of IB emissions of (_37^86)Rb beta-emitting isotope that its transition is classified as forbidden. In addition to the analytical calculation, the IB spectrum was also obtained by applying Monte Carlo Method to IB problem. The results were compared with the IB spectrum results which are calculated from the analytical expressions.

Keywords:

Internal Bremsstrahlung, Forbidden Beta Transition Monte Carlo, KUB Theory,

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1] Konopinski, E.J. 1966. The Theory of Beta Radioactivity, Oxford University Press, London
[2] Wu, C.S., S.A. Moskowski. 1966. Beta Decay, Wiley, New York.
[3] Parker, S.P.,(Editor).1983. Encyclopedia of Physics, McGraw-Hill, New York.
[4] Evans, R.D. 1955. The Atomic Nucleus, McGraw-Hill, New York.
[5] Almaz. E. 2000. The Investigation of Internal Bremsstrahlung Spectra of β^- Particles. Master of Science Thesis. Institute of Science, Uludağ University, Bursa.
[6] Knipp, J.K., Uhlenbeck, G.E., 1936. Emission of gamma radiation during the beta decay of nuclei, Physica, 3, 425-439.
[7] Bloch, F., 1936, On the continuous γ-radiation accompanyig the β-decay, Physical Review, 50 (1), 272-279.
[8] Chang, C.S.W., Falkoff, D.L., 1949, On the continuous gamma-radiation accompanying the beta-decay of nuclei, Physical Review, 76, 365-372.
[9] Nilsson, S.B., 1956. On the Coulomb effect for the internal bremsstrahlung accompanying beta decay. Ark. Fys. 10, 467–477.
[10] Lewis, P.R., Ford, G.W., 1957, Coulomb effects in inner bremsstrahlen. Physical Review, 107 (3), 756-765.
[11] Spruch, L., Gold, W., 1959, Coulomb corrections in the theory of internal bremsstrahlung, Physical Review, 113, 1060-1069.
[12] Ford, G.W., Martin, C.F., 1969. Detour transitions in internal bremsstrahlung. Nucl. Phys. A 134, 457–469.
[13] Cengiz, A., Almaz, E., 2004, Internal bremsstrahlung spectra of β- particle emitters using the Monte Carlo method, Radiation Physics and Chemistry, Bursa, 70, 661-668
[14] Bolgiano, P., Madansky, L., Rasetti, F., 1953, The Continuous Gamma-Ray Spectrum Accompanying Beta-Decay, Physical Review, 89, 679-684.
[15] Rubinstein, R.Y., 1981, Simulation and the Monte Carlo Method, John Wiley and Sons, New York, 71-166.