ENTRY 22949 20200909 22912294900000001 SUBENT 22949001 20200909 22912294900100001 BIB 15 108 2294900100002 TITLE Charged-particle spectrometry using a pencil-beam DT 2294900100003 neutron source for double-differential cross-section 2294900100004 measurement. 2294900100005 AUTHOR (K.Kondo, I.Murata, K.Ochiai, H.Miyamaru, N.Kubota, 2294900100006 S.Takagi, S.Shido, A.Takahashi, T.Nishitani) 2294900100007 INSTITUTE (2JPNOSA) Kondo, Murata, Miyamaru,Takagi, Shido, 2294900100008 Takahashi - Division of Electrical, Electronic and 2294900100009 Informational Engineering 2294900100010 (2JPNJAE) Ochiai, Kubota, Nishitani 2294900100011 REFERENCE (J,NIM/A,568,723,2006) 2294900100012 (S,JAERI-C-2005-003,158,2005) First author K.Kondo 2294900100013 REL-REF (O,23091001,K.Kondo+,S,JAERI-2005-003,158,2005) 2294900100014 Beryllium data in Entry 23091. 2294900100015 FACILITY (CCW,2JPNJAE) Fusion neutron source of JAERI 2294900100016 METHOD (COINC) Coincidence and anticoincidence. 2294900100017 (EDE) 2294900100018 (PHD) Pulse-height spectrum was obtained after 2294900100019 particle discrimination and combining the 2294900100020 anticoincidence spectrum of the delta-E detector with 2294900100021 the coincidence spectrum. 2294900100022 DETECTOR (TELES,SIBAR,SIBAR) A counter-telescope system with a 2294900100023 pair of silicon surface barrier detectors, one 2294900100024 for delta-E and one for E detector. 2294900100025 Telescope1 Telescope2 2294900100026 delta-E E-detector delta-E E-detector 2294900100027 Thickness 2294900100028 of depletion 2294900100029 layer 20-mum 1500-mum 9.6-mum 760-mum 2294900100030 * 2294900100031 Area 150-mm**2 300-mm**2 50-mm**2 300-mm**22294900100032 Threshold energy in coincidence measurement : 2294900100033 Telescope1 Telescope2 2294900100034 Proton 1.3MeV 0.7MeV 2294900100035 Deuteron 1.5MeV 0.9MeV 2294900100036 Triton 1.7MeV 1.0MeV 2294900100037 Alpha 4.4MeV 2.5MeV 2294900100038 Energy resolution for alpha-particle of 5486 keV from 2294900100039 241Am radiation source - 78keV for telescope 1; 2294900100040 83keV for telescope 2. 2294900100041 The calculated angular resolution function is on Fig.42294900100042 of NIM/A,568,723,2006. 2294900100043 The response function was calculated by the Monte Carlo2294900100044 code SRIM-2003 (http://www.srim.org/) combined with 2294900100045 the pre- and post-processing code of authors. 2294900100046 INC-SOURCE (D-T) The pencil-beam neutron source. A deuteron beam 2294900100047 is accelerated up to 350 keV and bombards a rotating 2294900100048 target of 3.7E+13 Bq tritium. A maximum neutron yield2294900100049 of 4.E+12 n/s is available with a beam current of 20 2294900100050 milli-Ampere. 2294900100051 Distance tritium target - sample - 440cm. 2294900100052 INC-SPECT Mean neutron energy calculated according to reaction 2294900100053 kinematics is 14.2 MeV, spread of neutron energy is 2294900100054 130 keV calculated with MCNP-4C2 code. Beam solid 2294900100055 angle divergence is 2.5E-5 sterad. 2294900100056 The maximum neutron flux at the outlet of the beam 2294900100057 is 1.E+6 neutrons/sec/cm**2 and the background 2294900100058 neutron flux outside the beam is lower than 2294900100059 5.E+2 neutrons/sec/cm**2 2294900100060 Non-uniformity of the neutron flux at a sample was 2294900100061 estimated at less than 0.1%. 2294900100062 CORRECTION Corrections were made for energy loss in a sample. 2294900100063 MONITOR (92-U-238(N,F),,SIG) For flux monitoring 2294900100064 The neutron fluence was determined by the Al foil 2294900100065 activation method and the flux monitoring of a 238U 2294900100066 fission chamber. For a standard cross-section, 2294900100067 122.0 mb for the 27Al(n,alpha) reaction evaluated in 2294900100068 the JENDL-3.3 was used. 2294900100069 ((MONIT)13-AL-27(N,A)11-NA-24,,SIG) 2294900100070 MONIT-REF (,K.Shibata+,J,NST,39,1125,2002) For Al27(n,a) 2294900100071 ERR-ANALYS Total error is a quadratic sum of constituents given 2294900100072 below - 2294900100073 -- Errors in the determination of neutron flux-- 2294900100074 (ERR-1,,1.5) Max. uncertainty in the statistics of 2294900100075 gamma-ray count 1.5%. 2294900100076 (ERR-2) The uncertainty in the detector efficiency 2% 2294900100077 (ERR-3,,0.1) Max.uncertainty in the sample weight 0.1% 2294900100078 (ERR-4,,0.1) Max.uncertainty in the irradiation, 2294900100079 cooling and measuring time 0.1%. 2294900100080 (ERR-5,,0.1) Max.uncertainty in the self-absorption of 2294900100081 gamma ray in a sample foil 0.1%. 2294900100082 (ERR-6,,0.1) Max. correction factor error due to 2294900100083 coincidence sum is 0.1%. 2294900100084 (ERR-7,,0.2) Max.uncertainty in the statistics of U-2382294900100085 flux monitor 0.2%. 2294900100086 -- Errors in the charged-particle measurement and data 2294900100087 processing-- 2294900100088 (ERR-8,,0.1) Max.uncertainty in the sample weight 0.1% 2294900100089 (ERR-9,,0.5) Max.uncertainty due to a particle 2294900100090 discrimination 0.5%. 2294900100091 (ERR-10) The uncertainty in the area of apertures of 2294900100092 detectors is 1%. 2294900100093 (ERR-11) The uncertainty in the distance of a sample 2294900100094 and aperture is 1%. 2294900100095 ANG-ERR -The uncertainty in the detection angle of 2294900100096 emitted charged-particle is +-1-degree. 2294900100097 Not considered uncertainties: 2294900100098 - standard reaction cross section, 2294900100099 - response function, 2294900100100 - unfolding procedure. 2294900100101 HISTORY (20070215C) S.M. 2294900100102 (20070225A) Last corrections have been done. 2294900100103 (20161020A) M.M. Ref. S,JAERI-2005-003,158,2005 was 2294900100104 added. Al monitor was moved from Subent 004 to Subent 2294900100105 001. ERR-ANALYS was corrected according to now-day 2294900100106 rules. BIB information was updated. 2294900100107 EN-RSL -> EN-RSL-HW. 2294900100108 ANG-ERR was moved from Subent 001 to proper Subents. 2294900100109 (20200909U) SD: Ref. JAERI-2005-003 updated. 2294900100110 ENDBIB 108 0 2294900100111 COMMON 6 3 2294900100112 EN EN-RSL-HW ERR-2 ERR-10 ERR-11 MONIT 2294900100113 MEV KEV PER-CENT PER-CENT PER-CENT MB 2294900100114 14.2 130. 2. 1. 1. 122.0 2294900100115 ENDCOMMON 3 0 2294900100116 ENDSUBENT 115 0 2294900199999 SUBENT 22949002 20161020 22552294900200001 BIB 7 30 2294900200002 REACTION (13-AL-27(N,X)2-HE-4,,DA/DE) 2294900200003 SAMPLE Metal circular foil of Al-27, thickness 50 micro-m, 2294900200004 2.17 cm in diameter 2294900200005 METHOD In the present study, authors attempted to use the 2294900200006 anticoincidence spectrum of the dE detector to 2294900200007 construct the low energy part of DDXc ( < 2.5 MeV). 2294900200008 COMMENT Of authors in NIM/A,568,723,2006, page 730: 2294900200009 The minimum measurable energy was around 0.9MeV. 2294900200010 Since the energy of alpha-particles emitted from a 2294900200011 medium-heavy nuclide is limited to above 2MeV due to 2294900200012 the potential barrier, the obtained DDX includes all 2294900200013 the components of the emission energy. 2294900200014 Measurement at each angle -8 hr,, total 4 days. 2294900200015 REL-REF (A,,H.Takagi+,S,JAERI-C-2005-003,178,2000) 2294900200016 (A,10634001,S.M.Grimes+,J,NSE,62,187,1977) 2294900200017 The detection energy cutoff of the previous methods 2294900200018 is probably to have caused the difference between the 2294900200019 present and the previous measurements in the lower 2294900200020 energy region. 2294900200021 ENDF/B-VI agrees well with the present result although2294900200022 there is a slight difference in the detailed 2294900200023 distribution. 2294900200024 The difference between JENDL-3.3 and the present 2294900200025 result is rather large. 2294900200026 ERR-ANALYS (ERR-S) Statistical uncertainty . 2294900200027 STATUS (TABLE) Keitaro Kondo, 2007-02-24 via INTERNET 2294900200028 (APRVD) Keitaro Kondo 2294900200029 Data at 45 deg are on Fig.8 of NIM/A,568,723,2006 . 2294900200030 Prelim.data at 45,70,110,135 deg are on Fig.3 of 2294900200031 S,JAERI-2005-003,158,2005 2294900200032 ENDBIB 30 0 2294900200033 COMMON 1 3 2294900200034 ANG-ERR 2294900200035 ADEG 2294900200036 1. 2294900200037 ENDCOMMON 3 0 2294900200038 DATA 4 74 2294900200039 ANG E DATA ERR-S 2294900200040 ADEG MEV MB/SR/MEV MB/SR/MEV 2294900200041 45. 1.75 8.08E-02 1.13E-01 2294900200042 45. 2.25 1.16E+00 3.52E-01 2294900200043 45. 2.75 2.75E+00 4.62E-01 2294900200044 45. 3.25 1.53E+00 3.02E-01 2294900200045 45. 3.75 1.77E+00 2.92E-01 2294900200046 45. 4.25 1.62E+00 2.53E-01 2294900200047 45. 4.75 1.51E+00 2.22E-01 2294900200048 45. 5.25 1.81E+00 2.26E-01 2294900200049 45. 5.75 1.96E+00 2.19E-01 2294900200050 45. 6.25 2.19E+00 2.16E-01 2294900200051 45. 6.75 2.51E+00 2.18E-01 2294900200052 45. 7.25 1.76E+00 1.73E-01 2294900200053 45. 7.75 1.30E+00 1.41E-01 2294900200054 45. 8.25 1.22E+00 1.30E-01 2294900200055 45. 8.75 1.27E+00 1.26E-01 2294900200056 45. 9.25 1.39E+00 1.27E-01 2294900200057 45. 9.75 1.05E+00 1.08E-01 2294900200058 45. 10.25 6.01E-01 8.15E-02 2294900200059 45. 10.75 2.74E-01 5.50E-02 2294900200060 45. 11.25 1.14E-01 3.54E-02 2294900200061 45. 11.75 3.31E-02 1.89E-02 2294900200062 70. 1.75 4.22E-02 6.87E-02 2294900200063 70. 2.25 5.46E-01 1.98E-01 2294900200064 70. 2.75 2.15E+00 3.36E-01 2294900200065 70. 3.25 1.75E+00 2.63E-01 2294900200066 70. 3.75 1.45E+00 2.14E-01 2294900200067 70. 4.25 2.00E+00 2.27E-01 2294900200068 70. 4.75 2.18E+00 2.18E-01 2294900200069 70. 5.25 1.75E+00 1.79E-01 2294900200070 70. 5.75 1.40E+00 1.50E-01 2294900200071 70. 6.25 1.21E+00 1.30E-01 2294900200072 70. 6.75 1.03E+00 1.13E-01 2294900200073 70. 7.25 1.03E+00 1.07E-01 2294900200074 70. 7.75 1.13E+00 1.06E-01 2294900200075 70. 8.25 1.13E+00 1.01E-01 2294900200076 70. 8.75 8.31E-01 8.20E-02 2294900200077 70. 9.25 6.87E-01 7.13E-02 2294900200078 70. 9.75 4.53E-01 5.55E-02 2294900200079 70. 10.25 1.40E-01 2.97E-02 2294900200080 70. 10.75 2.20E-02 1.15E-02 2294900200081 110. 1.75 9.75E-02 8.43E-02 2294900200082 110. 2.25 1.15E+00 2.32E-01 2294900200083 110. 2.75 2.58E+00 2.97E-01 2294900200084 110. 3.25 2.36E+00 2.47E-01 2294900200085 110. 3.75 1.66E+00 1.85E-01 2294900200086 110. 4.25 1.67E+00 1.68E-01 2294900200087 110. 4.75 1.47E+00 1.45E-01 2294900200088 110. 5.25 1.41E+00 1.30E-01 2294900200089 110. 5.75 1.20E+00 1.12E-01 2294900200090 110. 6.25 1.02E+00 9.63E-02 2294900200091 110. 6.75 1.03E+00 9.09E-02 2294900200092 110. 7.25 8.21E-01 7.68E-02 2294900200093 110. 7.75 6.33E-01 6.41E-02 2294900200094 110. 8.25 5.25E-01 5.53E-02 2294900200095 110. 8.75 4.19E-01 4.70E-02 2294900200096 110. 9.25 2.22E-01 3.27E-02 2294900200097 110. 9.75 6.20E-02 1.66E-02 2294900200098 110. 10.25 1.51E-02 7.88E-03 2294900200099 135. 1.75 4.65E-02 5.30E-02 2294900200100 135. 2.25 8.93E-01 1.91E-01 2294900200101 135. 2.75 2.15E+00 2.52E-01 2294900200102 135. 3.25 1.54E+00 1.87E-01 2294900200103 135. 3.75 1.54E+00 1.68E-01 2294900200104 135. 4.25 1.68E+00 1.59E-01 2294900200105 135. 4.75 2.06E+00 1.60E-01 2294900200106 135. 5.25 1.98E+00 1.46E-01 2294900200107 135. 5.75 1.22E+00 1.07E-01 2294900200108 135. 6.25 9.67E-01 8.88E-02 2294900200109 135. 6.75 1.04E+00 8.66E-02 2294900200110 135. 7.25 7.97E-01 7.17E-02 2294900200111 135. 7.75 8.30E-01 6.95E-02 2294900200112 135. 8.25 6.29E-01 5.76E-02 2294900200113 135. 8.75 1.57E-01 2.74E-02 2294900200114 135. 9.25 2.67E-02 1.08E-02 2294900200115 ENDDATA 76 0 2294900200116 ENDSUBENT 115 0 2294900299999 SUBENT 22949003 20161020 22552294900300001 BIB 8 17 2294900300002 REACTION (13-AL-27(N,X)2-HE-4,PAR,DA) 2294900300003 SAMPLE Metal circular foil of Al-27, thickness 50 micro-m, 2294900300004 2.17 cm in diameter 2294900300005 EN-SEC (E-MIN,A) Min energy of alpha particles registration 2294900300006 ANALYSIS (INTED) The angular differential cross section 2294900300007 was obtained by integrating of DDX over energy. 2294900300008 COMMENT Of compiler M.M. Alpha energy limits used for 2294900300009 integration are not mentioned in the article. 2294900300010 Probably, min/max values as given in Subent 002. 2294900300011 ERR-ANALYS (DATA-ERR) Sum of the statistical and systematic 2294900300012 errors 2294900300013 REL-REF (A,,H.Takagi+,S,JAERI-C-2005-003,178,2000) 2294900300014 (A,20634001,S.M.Grimes+,J,NSE,62,187,1977) 2294900300015 STATUS (TABLE) From authors via N.Ohtsuka 2294900300016 (DEP,22949002) DDX 2294900300017 Data are on Fig.9 of NIM/A,568,723,2006 2294900300018 Prelim.data are on Fig.4 of S,JAERI-2005-003,158,2005 2294900300019 ENDBIB 17 0 2294900300020 COMMON 2 3 2294900300021 E-MIN ANG-ERR 2294900300022 MEV ADEG 2294900300023 2.5 1. 2294900300024 ENDCOMMON 3 0 2294900300025 DATA 4 4 2294900300026 ANG COS DATA DATA-ERR 2294900300027 ADEG NO-DIM MB/SR MB/SR 2294900300028 45. 0.707 14.0 0.587 2294900300029 70. 0.342 10.5 0.430 2294900300030 110. -0.342 9.18 0.367 2294900300031 135. -0.707 8.78 0.334 2294900300032 ENDDATA 6 0 2294900300033 ENDSUBENT 32 0 2294900399999 SUBENT 22949004 20161020 22552294900400001 BIB 7 28 2294900400002 REACTION (13-AL-27(N,X)2-HE-4,PAR,SIG) 2294900400003 EN-SEC (E-MIN,A) Min energy of alpha particles registration 2294900400004 SAMPLE Metal circular foil of aluminum , thickness 50 2294900400005 micrometers, 2.17 cm in diameter 2294900400006 ANALYSIS (INTAD) A total cross section was obtained by fitting 2294900400007 ADX with Legendre polynomial series and integrating 2294900400008 it over angle. 2294900400009 REL-REF (D,,H.Takagi+,S,JAERI-C-2005-003,178,2000) 2294900400010 121+-3 mb at 14.1 MeV 2294900400011 Rather small, perhaps because of its higher detection 2294900400012 threshold 2294900400013 (A,20634001,S.M.Grimes+,J,NSE,62,187,1977) 2294900400014 121+-25 mb at 15.0 MeV 2294900400015 Small but, within its uncertainties, agrees with 2294900400016 the present result. 2294900400017 (A,10933002,D.W.Kneff+,J,NSE,92,491,1986) 2294900400018 143+-7 mb at 14.8 MeV 2294900400019 (A,22061002,T.Fukahori+,J,NST,23,91,1986) 2294900400020 141+-8 mb at 14.8 MeV 2294900400021 JENDL-3.3 and ENDF/B-VI at 14.2MeV incident neutron 2294900400022 energy are 126.2mb and 130.7mb (sum of n,a and n,n'a), 2294900400023 respectively, which are a bit smaller than the value 2294900400024 of this experiment. 2294900400025 ERR-ANALYS (ERR-T) Total uncertainty 2294900400026 STATUS (DEP,22949003) ADX 2294900400027 (TABLE) Table 4 of NIM/A,568,723,2006 2294900400028 Data are on Fig.10 of NIM/A,568,723,2006 2294900400029 Prelim.value 134+-2 in S,JAERI-2005-003,158,2005 2294900400030 ENDBIB 28 0 2294900400031 NOCOMMON 0 0 2294900400032 DATA 3 1 2294900400033 E-MIN DATA ERR-T 2294900400034 MEV MB MB 2294900400035 2.5 134.5 5.5 2294900400036 ENDDATA 3 0 2294900400037 ENDSUBENT 36 0 2294900499999 SUBENT 22949005 20161020 22552294900500001 BIB 8 18 2294900500002 REACTION (1-H-1(N,EL)1-H-1,,DA) 2294900500003 SAMPLE .Polyethylene film, thickness 4.6-mg/cm**2 = 50 2294900500004 micrometers, 2.51 cm in diameter 2294900500005 METHOD The measurements at scattering angles of 20, 31, 40 2294900500006 and 50deg; each during 1-3 h, the total experiment 2294900500007 needed a day . 2294900500008 COMMENT *By authors* the cross section of the Al-27(N,A) 2294900500009 reaction was used for the standard cross section. 2294900500010 ERR-ANALYS (DATA-ERR) Statistical and systematic error 2294900500011 STATUS (TABLE) From authors via N.Otsuka 2294900500012 Data are on Fig.11 of NIM/A,568,723,2006 2294900500013 REL-REF (A,11085002,J.D.Seagrave,J,PR,97,757,1955) 2294900500014 (A,,M.Tanaka+,J,JPJ,28,11,1970) 2294900500015 The obtained ADX agreed well with the evaluated ADX 2294900500016 in ENDF/B-VI, but slightly differed from JENDL-3.3. 2294900500017 HISTORY (20161020A) M.M. COS -> COS-CM 2294900500018 E-MIN=0.7 MeV and PAR were deleted ( confirmed by 2294900500019 K.Kondo via N.Otsuka 2017-01-18 ) 2294900500020 ENDBIB 18 0 2294900500021 COMMON 1 3 2294900500022 ANG-ERR 2294900500023 ADEG 2294900500024 1. 2294900500025 ENDCOMMON 3 0 2294900500026 DATA 3 4 2294900500027 COS-CM DATA-CM DATA-ERR 2294900500028 NO-DIM MB/SR MB/SR 2294900500029 -0.755 55.4 1.50 2294900500030 -0.485 54.9 1.54 2294900500031 -0.208 53.7 1.47 2294900500032 0.122 53.0 1.45 2294900500033 ENDDATA 6 0 2294900500034 ENDSUBENT 33 0 2294900599999 ENDENTRY 5 0 2294999999999