ENTRY 30153 20080208 31263015300000001 SUBENT 30153001 20080208 31263015300100001 BIB 17 36 3015300100002 INSTITUTE (3CZRUJF) 3015300100003 (4ZZZDUB) Popov 3015300100004 REFERENCE (J,CZJ/B,22,9,197201)Method,results 3015300100005 AUTHOR (J.Bischof,Z.Dlouhy,J.Kvitek,Yu.P.Popov) 3015300100006 TITLE Cross sections for 7 alpha transitions from Sm-149(n,a)3015300100007 at thermal energy 3015300100008 FACILITY (REAC) 3015300100009 INC-SOURCE (REAC) Reactor 3015300100010 INC-SPECT Thermal neutron spectrum whose temperature is given in 3015300100011 the data table under TEMP 3015300100012 SAMPLE Oxide enriched in Sm-149 to 94.6% 3015300100013 Target dimensions = 5x20 cm2 on Al backing 3015300100014 Thickness = 65 mug/cm2 of Sm2-O3 3015300100015 METHOD Direct detection of alphas 3015300100016 DETECTOR (SIBAR) Gold surface barrier silicon diode of 50 mm2, 3015300100017 embedded in a lead shielding 3015300100018 Alpha detector-target distance = 11 cm 3015300100019 The alpha detector is outside the neutron beam 3015300100020 MONITOR (62-SM-149(N,A)60-ND-146,PAR,SIG,,MXW) 3015300100021 For calibration purposes the 3015300100022 value of the cross section for the 9.178 MeV alpha 3015300100023 transition has been taken from Oakey,Macfarlane,Phys. 3015300100024 Lett.26B(1968)662 3015300100025 EN-SEC The transition-energy of the alfa-decay is given in the3015300100026 column headed E . The values were taken from 3015300100027 Macfarlane 3015300100028 MISC-COL (MISC) Temperature of the Maxwell distribution 3015300100029 STATUS (TABLE) Data taken from table 1 in CZJ/B 22 3015300100030 (APRVD) Approved by Dlouhy (letter= 19721004) 3015300100031 HISTORY (19720216C) CA. 3015300100032 (20080208A) BIB section updated 3015300100033 CORRECTION The alpha spectrum is corrected for the background 3015300100034 which was found to come mainly from the Al backing and 3015300100035 was described by an exponential function 3015300100036 ERR-ANALYS Given errors are statistical only and do not include 3015300100037 the standard-error 3015300100038 ENDBIB 36 0 3015300100039 COMMON 2 3 3015300100040 MONIT MONIT-ERR 3015300100041 MB MB 3015300100042 5.3600E+00 2.4000E-01 3015300100043 ENDCOMMON 3 0 3015300100044 ENDSUBENT 43 0 3015300199999 SUBENT 30153002 20080208 31263015300200001 BIB 3 5 3015300200002 REACTION (62-SM-149(N,A)60-ND-146,PAR,SIG,,MXW) 3015300200003 FLAG (1.) unresolved resonances at 7.835, 7.545 and 7.683MeV3015300200004 (2.) unresolved resonances at 7.393 and 7.316 MeV 3015300200005 HISTORY (19730817A) CA. Data table modified according to author3015300200006 instructions. 3015300200007 ENDBIB 5 0 3015300200008 COMMON 2 3 3015300200009 EN-DUMMY MISC 3015300200010 EV K 3015300200011 2.5300E-02 4.0000E+02 3015300200012 ENDCOMMON 3 0 3015300200013 DATA 4 7 3015300200014 E DATA DATA-ERR FLAG 3015300200015 MEV MB MB NO-DIM 3015300200016 9.1780E+00 5.3600E+00 1.5000E-01 3015300200017 8.7340E+00 4.1600E+01 4.0000E-01 3015300200018 8.1620E+00 8.0000E-01 1.3000E-01 3015300200019 8.0190E+00 9.9000E-01 1.5000E-01 3015300200020 7.7450E+00 4.9000E-01 2.3000E-01 1.0000E+00 3015300200021 7.4740E+00 3.2000E-01 1.5000E-01 3015300200022 7.3930E+00 2.9000E-01 1.9000E-01 2.0000E+00 3015300200023 ENDDATA 9 0 3015300200024 ENDSUBENT 23 0 3015300299999 SUBENT 30153003 20080208 31263015300300001 BIB 1 1 3015300300002 REACTION (62-SM-149(N,A)60-ND-146,PAR,SIG,,MXW) 3015300300003 ENDBIB 1 0 3015300300004 COMMON 2 3 3015300300005 EN-DUMMY MISC 3015300300006 EV K 3015300300007 2.5300E-02 3.0000E+02 3015300300008 ENDCOMMON 3 0 3015300300009 DATA 3 1 3015300300010 E DATA DATA-ERR 3015300300011 MEV MB MB 3015300300012 8.7340E+00 3.8700E+01 4.0000E-01 3015300300013 ENDDATA 3 0 3015300300014 ENDSUBENT 13 0 3015300399999 SUBENT 30153004 20080208 31263015300400001 BIB 2 3 3015300400002 REACTION (62-SM-149(N,A)60-ND-146,PAR,SIG) 3015300400003 ANALYSIS The cross section at 0.0253 MeV is deduced from the 3015300400004 cross section averaged over the neutron spectrum 3015300400005 ENDBIB 3 0 3015300400006 COMMON 1 3 3015300400007 EN-DUMMY 3015300400008 EV 3015300400009 2.5300E-02 3015300400010 ENDCOMMON 3 0 3015300400011 DATA 3 1 3015300400012 E DATA DATA-ERR 3015300400013 MEV MB MB 3015300400014 8.7340E+00 2.2200E+01 2.2000E+00 3015300400015 ENDDATA 3 0 3015300400016 ENDSUBENT 15 0 3015300499999 ENDENTRY 4 0 3015399999999