ENTRY 41609 20151020 41724160900000001 SUBENT 41609001 20151020 41724160900100001 BIB 15 43 4160900100002 TITLE Experimental search for the singlet metastable 4160900100003 deuteron in the radiative n-p capture. 4160900100004 AUTHOR (S.B.Borzakov, N.A.Gundorin, Yu.N.Pokotilovski) 4160900100005 INSTITUTE (4ZZZDUB) 4160900100006 REFERENCE (J,FCY/L,12,(4),837,2015) In English. 4160900100007 (J,PPN/L,12,536,2015) 4160900100008 #doi:10.1134/S154747711504010X 4160900100009 English translation of J,FCY/L 4160900100010 (W,BORZAKOV,20160215) Comment was received for 4160900100011 Subents 002-003 data. 4160900100012 (S,ISINN-16,158,2008) 4160900100013 Preliminary experiment was described, the data value is4160900100014 given as ~50 microb ( Subent 002 ). 4160900100015 FACILITY (REAC,4ZZZDUB) IBR-2M modernized pulsed reactor. 4160900100016 INC-SOURCE (REAC) Collimated to size 1.5x4.5 cm. 4160900100017 INC-SPECT Thermal neutrons of mean energy 30 meV, mean intensity4160900100018 6E+5 1/cm2/s 4160900100019 DETECTOR (HPGE) ORTEC HPGe detector with relative efficiency 35%4160900100020 ,energy resolution ~2.1keV for 1173 keV line of Co-60. 4160900100021 Surrounded by lead shield and placed at 15-20 cm from 4160900100022 the sample. The energy calibration was performed by 4160900100023 gamma-rays of Co-60, Cs-137 and other sources and by 4160900100024 first and second-escape peaks of 2223 keV line. 4160900100025 SAMPLE Polyethylene: 4160900100026 - disc 15.5 x 21 cm with hollow 3x8x14 cm ; 4160900100027 - disc 15.5x 7 cm; 4160900100028 - disc 9.5x 4.8 cm with hollow of 5x 4 cm. 4160900100029 Graphite of 2 cm thickness to measure background. 4160900100030 CORRECTION Backgrounds were measured without sample and with 4160900100031 graphite. 4160900100032 METHOD (PHD) 4160900100033 MONITOR (1-H-1(N,G)1-H-2,PAR,SIG) 4160900100034 Main 2223 keV gamma transition CS was used. 4160900100035 ANALYSIS Measured pulse height spectra were analyzed by VACTIV 4160900100036 code allowing determination of peaks, their energy and 4160900100037 peak areas. 4160900100038 REL-REF (N,,V.B.Zlokazov,J,NIM,199,509,1982)) VACTIV code 4160900100039 Data used for peaks identification from: 4160900100040 www.nndc.bnl.gov/CapGam/ ; www-nds.iaea.org 4160900100041 Data used to determine yields and energies of gammas 4160900100042 from: G.Erdman, W.Soyka, The Gamma Rays of the 4160900100043 Radionuclides. New York: Verlag Chemie, Weinheim,1979. 4160900100044 HISTORY (20151020C) M.M. 4160900100045 ENDBIB 43 0 4160900100046 COMMON 2 3 4160900100047 EN-MEAN E-LVL-NRM 4160900100048 MILLI-EV KEV 4160900100049 30. 0. 4160900100050 ENDCOMMON 3 0 4160900100051 ENDSUBENT 50 0 4160900199999 SUBENT 41609002 20151020 41724160900200001 BIB 4 11 4160900200002 REACTION (1-H-1(N,G)1-H-2,PAR,SIG) 4160900200003 COMMENT Of compiler. 4160900200004 In S,ISINN-16,158,2008 the preliminary value is given 4160900200005 as ~50microb, which was obtained using the monitor 4160900200006 value of 334+-0.5 mb for main 2223 keV gamma transition4160900200007 from ref. A.F.Cox+,J,NP,74,497,1965 ( Entry 21460). 4160900200008 This CS value is not mentioned in FCY/L,12,(4),837,20154160900200009 - so is not used as coded information. 4160900200010 ERR-ANALYS (DATA-ERR) Error type is not specified. 4160900200011 STATUS (TABLE) Text, page 843 of FCY/L,12,(4),837,2015 4160900200012 (SPSDD,41609003) Superseded by newer measurement. 4160900200013 ENDBIB 11 0 4160900200014 NOCOMMON 0 0 4160900200015 DATA 3 1 4160900200016 E DATA DATA-ERR 4160900200017 KEV MICRO-B MICRO-B 4160900200018 2165. 46. 25. 4160900200019 ENDDATA 3 0 4160900200020 ENDSUBENT 19 0 4160900299999 SUBENT 41609003 20151020 41724160900300001 BIB 4 12 4160900300002 REACTION (1-H-1(N,G)1-H-2,PAR,SIG) 4160900300003 ANALYSIS The peak at 2223 keV contains 2.06E+8 counts. 4160900300004 The line 2165 keV area =10600+-3740 . 4160900300005 Cross-section was estimated as: 4160900300006 =( SIG0*S(E2)*EPS(E0))/(S(E0)*EPS(E2)), where 4160900300007 S - peak area for corresponding gamma line, 4160900300008 SIG0 - CS of main transition 2223 keV ( MONITOR), 4160900300009 EPS - detector efficiency at corresponding gamma 4160900300010 energy. 4160900300011 ERR-ANALYS (DATA-ERR) Error type is not specified. 4160900300012 STATUS (TABLE) Text, page 843 of FCY/L,12,(4),837,2015 4160900300013 (PRELM) Preliminary data. 4160900300014 ENDBIB 12 0 4160900300015 NOCOMMON 0 0 4160900300016 DATA 3 1 4160900300017 E DATA DATA-ERR 4160900300018 KEV MICRO-B MICRO-B 4160900300019 2165. 17. 6. 4160900300020 ENDDATA 3 0 4160900300021 ENDSUBENT 20 0 4160900399999 SUBENT 41609004 20151020 41724160900400001 BIB 3 9 4160900400002 REACTION (1-H-1(N,G)1-H-2,PAR,SIG) 4160900400003 ANALYSIS Upper boundary of CS ( at 99% confidence level) was 4160900400004 estimated as: 4160900400005 (3*sqrt(S)/S(2223))*(EPS(E0)/EPS(E2))*SIG0, where 4160900400006 S - sum of experimental peak width in the energy range4160900400007 SIG0 - CS of main transition 2223 keV (MONITOR), 4160900400008 EPS - detector efficiency at corresponding gamma 4160900400009 energy. 4160900400010 STATUS (TABLE) Text, page 843 of FCY/L,12,(4),837,2015 4160900400011 ENDBIB 9 0 4160900400012 NOCOMMON 0 0 4160900400013 DATA 3 4 4160900400014 E-MIN E-MAX DATA-MAX 4160900400015 KEV KEV MICRO-B 4160900400016 2100. 2130. 15. 4160900400017 2131. 2160. 12. 4160900400018 2160. 2170. 35. 4160900400019 2170. 2200. 13. 4160900400020 ENDDATA 6 0 4160900400021 ENDSUBENT 20 0 4160900499999 ENDENTRY 4 0 4160999999999