Inner bremsstrahlung accompanying β decay of⁸⁶Rb

Abstract

Abstract. Inner bremsstrahlung accompanying the first-forbidden beta decay of 86Rb was measured using the magnetic deflection technique with a 4.5 x 5.1 cm2 NaI(T1) crystal in the energy range 200-1660 keV. The raw spectrum was unfolded using the step-by-step process of Starfelt and Liden and compared with KUB, LF and FM theories. The measured spectrum is found to show fairly good agreement with LF theory in the energy range 200-1500 keV and it is found to deviate thereafter from all three theories.

Study of the continuous internal bremsstrahlung spectrum from 204Tl by using singular value decomposition

“…For almost all forbidden transition of nuclei, the IB photon intensity spectra in the higher energy region have a problem of rapidly decreasing spectral intensity. Many authors (Babu et al, 1987(Babu et al, , 1985bBasavaraju et al, 1983;Sayibaba et al, 1987;Venkataramaiah et al, 1980;Gundu Rao et al, 1981) could not however explain exactly the deviation between the theory and experiment. We had also worked on IB spectra from different radioisotopes using modern unfolding approach like Gold Iteration Method (Almaz, 2007;.…”

“…In the majority of cases, the experimental distribution, especially in the case of forbidden transitions, is found to be much larger than the theoretical predictions (Hakeem and Goodrich, 1962;Kreische et al, 1968;Babu et al, 1985a;Keshava et al, 2000;. The higher the energy, the higher was the magnitude of deviation.…”

Study of low-energy internal Bremsstrahlung radiation from 147Pm

“…This process is classified as a nonunique first forbidden transition. The earlier work of Prasad et al (1974) on 147 Pm reports good agreement with the predictions of the theory of Lewis and Ford (1957); conversely, the more recent work of Babu et al (1985) reports wide disagreement with all the IB theories. In both studies, comparison of the IB spectrum has been performed only in the higher-energy region (above 35 keV) and the data were obtained using a poor resolution NaI(Tl) detector.…”

Internal bremsstrahlung spectra of β− particle emitters using the Monte Carlo method

“…Experimental IB spectra of several b-emitters have been reported in the literature (Lid! en and Starfelt, 1955;Venkataramaiah et al, 1980;Gundu Rao et al, 1981Basavaraju et al, 1983;Babu et al, 1985aBabu et al, , b, 1987Sayibaba et al, 1987;Badiger and Umakantha, 1989a, b;Basha et al, 1989;Dhaliwal et al, 1994;Raghavendra and Ramaswamy, 2001).…”