ENTRY A0007 20140310 A082A000700000001 SUBENT A0007001 20140310 A082A000700100001 BIB 10 28 A000700100002 TITLE Total cross-section measurement for T(t,2n)He-4 A000700100003 reaction at low energies A000700100004 AUTHOR (V.I.Serov,S.N.Abramovich,L.A.Morkin) A000700100005 INSTITUTE (4RUSKUR) A000700100006 REFERENCE (J,AE,42,59,197701) Main reference. A000700100007 (J,SJA,42,66,1977) English translation A000700100008 (J,IZV,35,165,1971) The first stage of measurement, A000700100009 prelim.results A000700100010 (J,BAS,35,149,1972) English transl. of IZV,35,165 A000700100011 FACILITY (VDG,4RUSNIR) A000700100012 METHOD (SITA,EXTB,BCINT) A000700100013 DETECTOR (LONGC).Detectors were calibrated by standard A000700100014 Ra-alpha-Be source. A000700100015 STATUS (APRVD).By V.I.Serov. A000700100016 (TABLE) The data in form of the tables were received A000700100017 from the authors. A000700100018 REL-REF (A,A1103002,A.M.Govorov+,R,JINR-P-764,1961) A000700100019 See explanation below A000700100020 (A,A1089002,H.Agnew+,J,PR,84,862,1951) A000700100021 experimental results of the present paper are A000700100022 compared with experimental results of these papers. A000700100023 HISTORY (19770825C) A000700100024 (19790621R) A000700100025 (19800716A) A000700100026 (20080608A) BIB section updated A000700100027 (20140310A) SD: Updated to new date formats,lower case.A000700100028 Corrections according last EXFOR rules and Dict. A000700100029 Ref. BAS,35,149 was added. Subent 2 splitted. A000700100030 ENDBIB 28 0 A000700100031 NOCOMMON 0 0 A000700100032 ENDSUBENT 31 0 A000700199999 SUBENT A0007002 20140310 A082A000700200001 BIB 8 35 A000700200002 REACTION (1-H-3(T,2N)2-HE-4,,SIG) A000700200003 PART-DET (N) A000700200004 ADD-RES (COMP,THEO).The determination of astrophysical A000700200005 factor was made. The correlation of total A000700200006 cross sections of the T(t,2n)He-4 and He-3(He3,2p)He-4 A000700200007 reactions is discussed. A000700200008 ERR-ANALYS (ERR-T).Accidental error of total cross-section A000700200009 includes ERR-S and ERR-SYS. A000700200010 (ERR-S,1.,5.) It is conditioned by statistical errors A000700200011 of measurement (1-5%), A000700200012 (ERR-SYS) In the values of total cross-sections A000700200013 systematic error +-7% is possible. This error A000700200014 is connected with accuracy of determining the A000700200015 coefficient of anisotropy includes: A000700200016 (ERR-1) errors in determination gas pressure (+-3%) andA000700200017 (ERR-2) concentration of tritium (+-5%). A000700200018 (EN-ERR).Essential error of measurement-error of A000700200019 determination the energy of tritons in exit of gas A000700200020 target window. A000700200021 SAMPLE Gas target 1-H-3 with thin entrance window of A000700200022 aluminum oxide, thickness 50 microgram/cm**2. A000700200023 inside of target and in front of it Li-F-targets A000700200024 for determination of energy loss of accelerated A000700200025 particles in entrance window of gas target were A000700200026 placed. A000700200027 ANALYSIS (INTAD).Angular distributions of neutron yields were A000700200028 measured for triton energies of 52 and 76 keV in the A000700200029 angular interval from 0 degree to 150 degree. Later on A000700200030 interpolation for energy and repeated counting A000700200031 from 0 degree to 180 degree were made. A000700200032 COMMENT (By compiler). authors assumed that A000700200033 1.angular distributions may be described by A000700200034 formula W(theta)=A+B*cos(theta) A000700200035 2.value (A+B)/A is linear function of energy. A000700200036 HISTORY (20140310A) SD: Differential data moved to Subent 5. A000700200037 ENDBIB 35 0 A000700200038 COMMON 3 3 A000700200039 ERR-1 ERR-2 ERR-SYS A000700200040 PER-CENT PER-CENT PER-CENT A000700200041 3. 5. 7. A000700200042 ENDCOMMON 3 0 A000700200043 DATA 4 9 A000700200044 EN EN-ERR DATA ERR-T A000700200045 KEV KEV MB PER-CENT A000700200046 31.25 2.3 0.71 13.9 A000700200047 37.00 2.1 1.43 11.0 A000700200048 42.80 2.5 2.28 9.9 A000700200049 46.80 2.0 3.00 6.7 A000700200050 50.30 2.4 3.52 8.2 A000700200051 58.40 2.5 4.49 7.6 A000700200052 82.60 2.6 9.68 6.4 A000700200053 109.70 2.6 14.20 6.2 A000700200054 155.40 2.2 23.00 6.0 A000700200055 ENDDATA 11 0 A000700200056 ENDSUBENT 55 0 A000700299999 SUBENT A0007003 20140310 A082A000700300001 BIB 4 21 A000700300002 REACTION (1-H-3(T,2N)2-HE-4,,DA,,REL) A000700300003 PART-DET (N) A000700300004 SAMPLE Gas target 1-H-3 with thin entrance window of A000700300005 aluminum oxide, thickness 50 microgram/cm**2. A000700300006 inside of target and in front of it Li-F-targets A000700300007 for determination of energy loss of accelerated A000700300008 particles in entrance window of gas target were A000700300009 placed. A000700300010 ERR-ANALYS (ERR-T).Accidental error of total cross-section A000700300011 includes: A000700300012 (ERR-S,1.,10.) It is conditioned by statistical errors A000700300013 of measurement (1-10%), A000700300014 (ERR-1) errors in determination gas pressure (+-3%) andA000700300015 (ERR-2) concentration of tritium (+-5%). A000700300016 (ERR-3) In the values of total cross-sections A000700300017 systematic error +-7% is possible. This error A000700300018 is connected with accuracy of determining the A000700300019 coefficient of anisotropy. A000700300020 (EN-ERR).Essential error of measurement-error of A000700300021 determination the energy of tritons in exit of gas A000700300022 target window. A000700300023 ENDBIB 21 0 A000700300024 COMMON 3 3 A000700300025 ERR-1 ERR-2 ERR-3 A000700300026 PER-CENT PER-CENT PER-CENT A000700300027 3. 5. 7. A000700300028 ENDCOMMON 3 0 A000700300029 DATA 4 12 A000700300030 EN ANG DATA DATA-ERR A000700300031 KEV ADEG ARB-UNITS ARB-UNITS A000700300032 52. 0. 15.79 0.45 A000700300033 52. 30. 15.45 0.46 A000700300034 52. 60. 15.33 0.41 A000700300035 52. 90. 14.66 0.48 A000700300036 52. 120. 15.09 0.43 A000700300037 52. 150. 15.50 0.40 A000700300038 76.1 0. 17.3 0.42 A000700300039 76.1 30. 16.6 0.43 A000700300040 76.1 60. 15.79 0.43 A000700300041 76.1 90. 15.91 0.41 A000700300042 76.1 120. 15.57 0.41 A000700300043 76.1 150. 14.88 0.40 A000700300044 ENDDATA 14 0 A000700300045 ENDSUBENT 44 0 A000700399999 SUBENT A0007004 20140310 A082A000700400001 BIB 7 14 A000700400002 REACTION (1-H-3(T,2N)2-HE-4,,DA,,COS/REL,DERIV) A000700400003 PART-DET (N) A000700400004 STATUS (DEP,A0007003) A000700400005 COMMENT (By compiler). authors assumed that A000700400006 1.angular distributions may be described by A000700400007 formula W(theta)=A(0)+A(1)*cos(theta) A000700400008 2.value (A(0)+A(1))/A(0) is linear function of energy. A000700400009 ERR-ANALYS (DATA-ERR). Standard deviation. A000700400010 (MISC-ERR).standard deviation of value (A(0)+A(1))/A(0)A000700400011 MISC-COL (MISC1).Coefficient of correlation between A(0) and A000700400012 A(1). A000700400013 (MISC).value (A(0)+A(1))/A(0) A000700400014 HISTORY (20140310A) SD: Vector COMMON was converted to normal A000700400015 presentation. A000700400016 ENDBIB 14 0 A000700400017 NOCOMMON 0 0 A000700400018 DATA 7 4 A000700400019 EN NUMBER DATA DATA-ERR MISC1 MISC A000700400020 MISC-ERR A000700400021 KEV NO-DIM ARB-UNITS ARB-UNITS ARB-UNITS ARB-UNITS A000700400022 ARB-UNITS A000700400023 52. 0. 15.27 0.6 0.39 1.02A000700400024 0.019 A000700400025 52. 1. 0.303 0.3 0.39 1.02A000700400026 0.019 A000700400027 76.1 0. 15.7 0.6 0.91 1.07A000700400028 0.03 A000700400029 76.1 1. 1.1 0.5 0.91 1.07A000700400030 0.03 A000700400031 ENDDATA 12 0 A000700400032 ENDSUBENT 31 0 A000700499999 SUBENT A0007005 20140310 A082A000700500001 BIB 8 35 A000700500002 REACTION (1-H-3(T,2N)2-HE-4,,DA) A000700500003 PART-DET (N) A000700500004 ADD-RES (COMP,THEO).The determination of astrophysical A000700500005 factor was made. The correlation of total A000700500006 cross sections of the T(t,2n)He-4 and He-3(He3,2p)He-4 A000700500007 reactions is discussed. A000700500008 ERR-ANALYS (ERR-T).Accidental error of total cross-section A000700500009 includes ERR-S and ERR-SYS. A000700500010 (ERR-S,1.,5.) It is conditioned by statistical errors A000700500011 of measurement (1-5%), A000700500012 (ERR-SYS) In the values of total cross-sections A000700500013 systematic error +-7% is possible. This error A000700500014 is connected with accuracy of determining the A000700500015 coefficient of anisotropy includes: A000700500016 (ERR-1) errors in determination gas pressure (+-3%) andA000700500017 (ERR-2) concentration of tritium (+-5%). A000700500018 (EN-ERR).Essential error of measurement-error of A000700500019 determination the energy of tritons in exit of gas A000700500020 target window. A000700500021 SAMPLE Gas target 1-H-3 with thin entrance window of A000700500022 aluminum oxide, thickness 50 microgram/cm**2. A000700500023 inside of target and in front of it Li-F-targets A000700500024 for determination of energy loss of accelerated A000700500025 particles in entrance window of gas target were A000700500026 placed. A000700500027 ANALYSIS (INTAD).Angular distributions of neutron yields were A000700500028 measured for triton energies of 52 and 76 keV in the A000700500029 angular interval from 0 degree to 150 degree. Later on A000700500030 interpolation for energy and repeated counting A000700500031 from 0 degree to 180 degree were made. A000700500032 COMMENT (By compiler). authors assumed that A000700500033 1.angular distributions may be described by A000700500034 formula W(theta)=A+B*cos(theta) A000700500035 2.value (A+B)/A is linear function of energy. A000700500036 HISTORY (20140310T) SD: Part of Subent 2. A000700500037 ENDBIB 35 0 A000700500038 COMMON 4 3 A000700500039 ANG ERR-1 ERR-2 ERR-SYS A000700500040 ADEG PER-CENT PER-CENT PER-CENT A000700500041 0. 3. 5. 7. A000700500042 ENDCOMMON 3 0 A000700500043 DATA 4 9 A000700500044 EN EN-ERR DATA ERR-T A000700500045 KEV KEV MB/SR PER-CENT A000700500046 31.25 2.3 0.058 13.9 A000700500047 37.00 2.1 0.117 11.0 A000700500048 42.80 2.5 0.187 9.9 A000700500049 46.80 2.0 0.247 6.7 A000700500050 50.30 2.4 0.290 8.2 A000700500051 58.40 2.5 0.373 7.6 A000700500052 82.60 2.6 0.819 6.4 A000700500053 109.70 2.6 1.23 6.2 A000700500054 155.40 2.2 2.06 6.0 A000700500055 ENDDATA 11 0 A000700500056 ENDSUBENT 55 0 A000700599999 ENDENTRY 5 0 A000799999999