A. S et al., Application of fundamental parameter method for investigation of the branching intensity of 1001-keV gamma energy of Pa-234m, APPL RAD IS, 51(6), 1999, pp. 725-728
The intensity of the 1001-keV gamma line of Pa-234m can be used to estimate
the quantity of U-238 in a matrix. However, the branching intensity value
currently accepted for this line seems to be in error. In the present work,
the branching intensity of the 1001-keV gamma line of Pa-234m has been re-
evaluated using high-resolution gamma spectrometry. We obtained a value of
0.92 +/- 0.02% which is close to 1.6 times the value of Bjornholm and Niels
en (Bjornholm, S., Nielson, O.B., 1963. The decay of the 1.14 min isomer of
Pa-234 (UX2). Nucl. Phys. 42. 642). (C) 1999 Elsevier Science Ltd. All rig
hts reserved.