ENTRY G3139 20250527 G057G313900000001 SUBENT G3139001 20250527 G057G313900100001 BIB 12 31 G313900100002 TITLE Measurement of yield ratios for the isomeric pair G313900100003 137m,gCe in the 141Pr(g,x)137m,gCe reactions with G313900100004 bremsstrahlung end-point energies of 50-, 60-, and G313900100005 70-MeV G313900100006 AUTHOR (V.D.Nguyen, T.L.Nguyen, T.X.Nguyen, D.K.Pham, G313900100007 T.H.Nguyen, G.N.Kim, K.Kim, S.G.Shin, Y.U.Kye, G313900100008 M.H.Cho) G313900100009 INSTITUTE (3VN IPH,3VN NNR,3KORKNU,3KORPUE) G313900100010 (3VN VN) Duy Tan University, Hanoi G313900100011 REFERENCE (J,RPC,176,109016,2020) G313900100012 FACILITY (LINAC,3KORPUE) Pohang Accelerator Laboratory (PAL) G313900100013 INC-SOURCE (BRST) Pulsed electron beam on thin tungsten target G313900100014 (Size 100 mm x 100 mm, thickness 0.1 mm) G313900100015 SAMPLE Praseodymium foil (Pr) G313900100016 - Purity: 99.9% G313900100017 - Thickness: 0.1 mm G313900100018 - Size: 15 mm x 15 mm G313900100019 METHOD (ACTIV,GSPEC) Irradiated for 1 hour G313900100020 DETECTOR (HPGE) Energy resolution of 1.8 keV for 1332.5 keV G313900100021 peak of 60Co and detection efficiency of 20% relative G313900100022 to a 3 inch x 3 inch in NaI(Tl) detector at 1332.5 keVG313900100023 ERR-ANALYS (ERR-T) Total uncertainty: 11-15% G313900100024 (ERR-S,3.,4.) Statistical error (3-4%)G313900100025 (ERR-1,3.,5.) Gamma-ray intensity (3-5%)G313900100026 (ERR-2,4.,6.) Gamma-ray interference (4-6%)G313900100027 (ERR-3,3.,4.) Photo peak area fitting (3-4%)G313900100028 (ERR-4,6.,7.) Photon flux (6-7%)G313900100029 (ERR-5,5.,6.) Others (5-6%)G313900100030 STATUS (TABLE,,V.D.Nguyen+,J,RPC,176,109016,2020) Table 2 G313900100031 (APRVD) Approved by G.N.Kim (2025-06-12) G313900100032 HISTORY (20250527C) S.C.Yang G313900100033 ENDBIB 31 0 G313900100034 NOCOMMON 0 0 G313900100035 ENDSUBENT 34 0 G313900199999 SUBENT G3139002 20250527 G057G313900200001 BIB 3 10 G313900200002 REACTION 1(59-PR-141(G,X)58-CE-137-M/G,,SIG/RAT,,BRA) G313900200003 2(59-PR-141(G,X)58-CE-137-M/G,,SIG/RAT,,BRA) G313900200004 DECAY-DATA (58-CE-137-M,34.4HR,DG,254.29,0.111) 11/2- G313900200005 (58-CE-137-G,9.0HR,DG,447.15,0.0168) 3/2+ G313900200006 ANALYSIS Contribution of 255.11 keV gammas from 139Pr (0.236%) G313900200007 to the measured 254.29 keV peak area was G313900200008 1subtracted by estimating the 139Pr yield by its G313900200009 1347.3 keV (0.473%) peak area. G313900200010 2minimized by performing the measurement after complete G313900200011 decay of 139Pr (4.41 h). G313900200012 ENDBIB 10 0 G313900200013 NOCOMMON 0 0 G313900200014 DATA 5 3 G313900200015 EN-MAX DATA 1ERR-T 1DATA 2ERR-T 2 G313900200016 MEV NO-DIM NO-DIM NO-DIM NO-DIM G313900200017 50. 0.95 0.14 0.96 0.15 G313900200018 60. 1.42 0.18 1.39 0.17 G313900200019 70. 1.78 0.22 1.79 0.20 G313900200020 ENDDATA 5 0 G313900200021 ENDSUBENT 20 0 G313900299999 ENDENTRY 2 0 G313999999999