The disintegration of 103mRh

Precise measurement of αK and αT for the 39.8-keV E3 transition in Nica1, Hardy2, Iacob3 et al. 2018Phys. Rev. C6000View full textAdd to dashboardCite

“…Again, it is Ref. [16] that disagrees with our current measurement, 1428 (13). There is no obvious reason for the disagreement but it should be noted that the technique used in the older measurement was rather complex, while ours in essence depended only on the relative intensities of two peaks in a well-calibrated HPGe spectrum.…”

“…There have been six previous measurements of α K for the 39.8-keV transition in 103 Rh, of which the most precise yielded 127(6) [16] and 153 (6) [19]. Both disagree with our even more precise result of 141.1(23) but, curiously, their average agrees completely.…”

“…The value for α T 39.8 has only been measured twice before, with the results 1430(89) [18] and 1531 (30) [16]. Again, it is Ref.…”

“…Like many experimental ICCs, the α K and α T coefficients for the 39.8-keV E3 transition in 103 Rh have been measured several times [14][15][16][17][18][19] but only once in the past 40 years. Of the six α K results, four have uncertainties above ±10% and are unable to comment meaningfully on the theory; the fifth and sixth claim to be ±5% but one of them [19] quotes a value that agrees with neither version of the ICC theory, and the other [16], a value that agrees with the version of the ICC theory that ignores the atomic vacancy, which would be striking if true. There are only two previous α T results [16,18], one of which agrees with both versions of the theory, the other with neither.…”

“…Of the six α K results, four have uncertainties above ±10% and are unable to comment meaningfully on the theory; the fifth and sixth claim to be ±5% but one of them [19] quotes a value that agrees with neither version of the ICC theory, and the other [16], a value that agrees with the version of the ICC theory that ignores the atomic vacancy, which would be striking if true. There are only two previous α T results [16,18], one of which agrees with both versions of the theory, the other with neither. Furthermore, none of these references acknowledges that the energy of the γ ray of interest, 39.8 keV, is very nearly equal to twice the energy of rhodium K α x rays, ∼40.3 keV.…”