ENTRY 23207 20140109 22392320700000001 SUBENT 23207001 20140109 22392320700100001 BIB 12 64 2320700100002 TITLE Relative intensities of prompt gamma-rays from the 2320700100003 35Cl(n,gamma)36Cl reaction with thermal neutrons as 2320700100004 secondary gamma-ray intensity standards. 2320700100005 AUTHOR (M.Shibata, A.Tojo, I.Miyazaki, M.Furuta, H.Hayashi, 2320700100006 Y.Kojima, Y.Shima, A.Taniguchi) 2320700100007 INSTITUTE (2JPNNAG) M.Shibata, A.Tojo, I.Miyazaki, M.Furuta, 2320700100008 H.Hayashi, Y.Kojima, Y.Shima . 2320700100009 (2JPNKTO) A.Taniguchi . 2320700100010 REFERENCE (J,ARI,73,60,2013) 2320700100011 #doi:10.1016/j.apradiso.2012.11.008 2320700100012 FACILITY (REAC,2JPNKTO) Kyoto University reactor (KUR) 2320700100013 INC-SOURCE (REAC) B4 supermirror neutron guide tube at the Kyoto 2320700100014 University reactor 2320700100015 INC-SPECT The thermal neutron fluence rates up stream and down 2320700100016 stream under the 5MW condition were 2.4E+7 n/cm**2/s 2320700100017 and 2.0E+7 n/cm**2/s, respectively. The dimensions of 2320700100018 the neutron beam were 14x61 mm**2. 2320700100019 The neutron fluence rate during the experiments was 2320700100020 monitored by measuring the counting rate of some 2320700100021 gamma-rays from the 35Cl(n,g)36Cl reaction. 2320700100022 Also the neutron fluence rate was checked with the 2320700100023 induced activity of a 197Au(n,g)198Au reaction by 2320700100024 inserting the 197Au sample every 6 hours. 2320700100025 DETECTOR (HPGE) Three 22%,60%,90% HPGe detectors were used to 2320700100026 measure prompt gamma-rays. 2320700100027 The relative detection efficiency at a 2320700100028 sample-to-detector-distance of 20cm for every detector 2320700100029 was predetermined using the radioactive sources 56Co 2320700100030 and 152Eu and prompt gamma-rays from the 14N(n,g)15N 2320700100031 with the Monte Carlo simulation code GEANT4. 2320700100032 The total efficiencies,which were used to correct the 2320700100033 coincidence summing effects,were experimentally 2320700100034 determined by the mono-energetic gamma-sources 54Mn, 2320700100035 57Co, 137Cs, 203Hg, 60Co, 88Y. 2320700100036 The uncertainties of the efficiencies for the detectors2320700100037 were found to be 0.5% between 244 keV and 5MeV and 2320700100038 0.7% above 5MeV. 2320700100039 The counting rates were between 18 and 29 kcps, and the2320700100040 measuring times were from 6-30 h. 2320700100041 The energy resolution at 1332keV was maintained at 2320700100042 2.0keV for the 22% and 60% detectors and at 2.6 keV for2320700100043 the 90% detector by using high rate or ultra-high rate 2320700100044 amplifiers (ORTEC937 or 937U). Five measurements were 2320700100045 performed. 2320700100046 An additional 38% HPGe detector was used to monitor the2320700100047 neutron fluence rate during the experiments by 2320700100048 measuring the counting rate of some gamma-rays from the2320700100049 35Cl(n,g)36Cl reaction. 2320700100050 SAMPLE The polyvinylidene chlorides CH(2)-CCl(2) of 42-167 mg.2320700100051 The target box and the beam shutter were made of 10-mm 2320700100052 thick polytetrafluoroethylene plates that included 30% 2320700100053 by weight enriched lithium fluoride 6LiF. The samples 2320700100054 were glued on a thin carbon sheet and were set at 30deg2320700100055 angle against each detector in the target box. 2320700100056 ANALYSIS The peak areas of gamma-rays were evaluated by the 2320700100057 summation of counts in the channel interval 2320700100058 Cch-3*FWHM, Cch+33*FWHM, where Cch - the peak center, 2320700100059 FWHM - the full width at the half maximum of the 2320700100060 gamma-ray peak. 2320700100061 CORRECTION For coincidence summing effects - For the 22%, 60% and 2320700100062 90% HPGe detectors,the typical summing effects for the 2320700100063 8578.6keV gamma-ray were found to be approximately 2320700100064 0.5%,1.5% and 3.0%,respectively. 2320700100065 HISTORY (20140109C) M.M. 2320700100066 ENDBIB 64 0 2320700100067 COMMON 1 3 2320700100068 EN-DUMMY 2320700100069 EV 2320700100070 2.53E-02 2320700100071 ENDCOMMON 3 0 2320700100072 ENDSUBENT 71 0 2320700199999 SUBENT 23207002 20140109 22392320700200001 BIB 6 37 2320700200002 REACTION ((17-CL-35(N,G)17-CL-36,,SPC)// 2320700200003 (17-CL-35(N,G)17-CL-36,,SPC)) 2320700200004 Relative to 7414.0 keV gamma transition. 2320700200005 Data are given in Table 1 in per-cents, 2320700200006 multiply by compiler by 1.E-2 to obtain NO-DIM units. 2320700200007 REL-REF (A,,C.Coceva+,J,NIM/A,378,511,1996) Exp. 2320700200008 (A,21809002,B.Krusche+,J,NP/A,386,245,1982) 2320700200009 (A,13815005,G.D.Loper+,J,NIM,105,453,1972) 2320700200010 (A,,S.Raman+,J,NIM/A,454,389,2000) 2320700200011 (A,,T.J.Kennett+,J,CJP,59,93,1981) 2320700200012 (A,,G.L.Molnar,B,MOLNAR,173,2004) 2320700200013 Author Z.Revay+, ed.G.L.Molnar. 31556.002 ? 2320700200014 (A,31489002,L.Venturini+,J,ARI,48,493,1997) 2320700200015 Previous values are consistent with the present values 2320700200016 within 5%. Nevertheless, they show systematic behavior 2320700200017 at low energy. 2320700200018 EN-SEC (E-NM,G) Gamma ray energy of nominator. 2320700200019 (E-DN,G) Gamma ray energy of denominator. 2320700200020 FLAG Contamination: 2320700200021 (1.) Double Escape peak of gamma 2622.9 2320700200022 (2.) Double Escape peak of gamma 2976.3, 2320700200023 Single escape peak of gamma 2470.0 2320700200024 (3.) Double Escape peak of gamma 4082.7 2320700200025 (4.) Double Escape peak of gamma 6544.4 2320700200026 (5.) Single escape peak of gamma 6422.8, 2320700200027 Compton edge of gamma 6110.9 2320700200028 (6.) Single escape peak of gammas 6619.6+6627.8+6642.0.2320700200029 ERR-ANALYS (ERR-S,0.03,1.5) Counting statistics 0.03-1.5 %. 2320700200030 Principal sources of systematic uncertainties: 2320700200031 (ERR-1,0.5,0.7) Peak efficiencies 2320700200032 0.5 % (244keV-5MeV), 0.7 % (> 5 MeV). 2320700200033 (ERR-2,,0.3) Total efficiencies <0.3 % (3% of 2320700200034 correction total magnitude). 2320700200035 (ERR-3,,0.3) Escape peak ratio < 0.3 (3% of 2320700200036 correction total magnitude). 2320700200037 (ERR-4) Peak area evaluation 0.3%. 2320700200038 STATUS (TABLE) Table 1 of J,ARI,73,60,2013. 2320700200039 ENDBIB 37 0 2320700200040 COMMON 2 3 2320700200041 E-DN ERR-4 2320700200042 KEV PER-CENT 2320700200043 7414.0 0.3 2320700200044 ENDCOMMON 3 0 2320700200045 DATA 6 16 2320700200046 E-NM E-NM E-NM DATA DATA-ERR FLAG 2320700200047 KEV KEV KEV NO-DIM NO-DIM NO-DIM 2320700200048 786.3 788.4 256.5 E-2 1.3 E-2 2320700200049 1131.3 18.60 E-2 0.10 E-2 2320700200050 1162.7 1164.9 1171.0 284.9 E-2 1.4 E-2 2320700200051 1327.4 11.58 E-2 0.06 E-2 2320700200052 1601.1 35.36 E-2 0.18 E-2 1. 2320700200053 1951.1 1959.4 309.1 E-2 1.5 E-2 2. 2320700200054 3061.9 33.45 E-2 0.17 E-2 3. 2320700200055 5517.2 16.48 E-2 0.18 E-2 4. 2320700200056 5715.3 52.99 E-2 0.54 E-2 2320700200057 5902.7 5913.3 11.62 E-2 0.14 E-2 5. 2320700200058 6110.9 196.7 E-2 2.0 E-2 6. 2320700200059 6619.6 6627.8 6642.0 123.4 E-2 1.2 E-2 2320700200060 6977.9 22.27 E-2 0.23 E-2 2320700200061 7414.0 100.0 E-2 1.0 E-2 2320700200062 7790.3 81.42 E-2 0.82 E-2 2320700200063 8578.6 27.30 E-2 0.26 E-2 2320700200064 ENDDATA 18 0 2320700200065 ENDSUBENT 64 0 2320700299999 ENDENTRY 2 0 2320799999999