ENTRY 22126 19891211 00002212600000001
SUBENT 22126001 19891211 00002212600100001
BIB 15 69 2212600100002
REFERENCE (J,NST,25,757,8810) 2212600100003
TITLE -NEUTRON RESONANCE PARAMETERS OF BA-135, BA-137 AND 2212600100004
BA-138. 2212600100005
AUTHOR (M.MIZUMOTO) 2212600100006
INSTITUTE (2JPNJAE) 2212600100007
FACILITY (LINAC) THE 120 MEV JAERI LINAC, OPERATED WITH 300 2212600100008
PULSES/SECOND WITH A PULSE WIDTH OF 30 NS AND A PEAK 2212600100009
CURRENT OF 3.5 AMPERE, WAS USED FOR THE MEASUREMENTS. 2212600100010
INC-SOURCE .120 MEV ELECTRONS ON A LAMINATED WATER-COOLED TANTALUM2212600100011
TARGET. THE NEUTRON BEAM WAS MODERATED BY A 5 CM THICK2212600100012
BORON LOADED POLYETHYLENE PLATE. THE TARGET WAS SHIEL-2212600100013
DED BY A LEAD AND COPPER SHADOW BAR OF 4 CM BY 6 CM 2212600100014
AREA AND 60 CM LONG TO REDUCE THE DIRECT GAMMA-FLASH. 2212600100015
INC-SPECT .WHITE SPECTRUM. A 5 CM BORON-NITRIDE FILTER WAS USED 2212600100016
ELIMINATE LOW ENERGY NEUTRONS IN THE 56.32 M MEASURE- 2212600100017
MENT, WHILE A 6 MM BORAL FILTER WAS USED IN THE 191.492212600100018
M MEASUREMENT. IN THE LATTER CASE, THE NEUTRON BEAM 2212600100019
WAS COLLIMATED TO 3.5 CM AT A DISTANCE OF 100 FROM THE2212600100020
TARGET. 2212600100021
METHOD (TOF ) TIME-OF-FLIGHT TRANSMISSION MEASUREMENTS WITH 2212600100022
A FLIGHT PATH OF 56.32 M FOR ENERGIES BELOW 2 KEV AND 2212600100023
A FLIGHT PATH OF 191.49 M FOR ENERGIES ABOVE 2 KEV. 2212600100024
THE FLIGHT PATH WAS EVACUATED, USING IN THE FIRST CASE2212600100025
THIN MYLAR WINDOWS AND IN THE SECOND CASE ALUMINUM 2212600100026
WINDOWS WITH A TOTAL THICKNESS OF 5.5 MM. 2212600100027
.THE ENERGY CALIBRATION WAS MADE USING THE 5.9035 KEV 2212600100028
RESONANCE IN AL AND THE 3.360 KEV AND 71.191 KEV 2212600100029
RESONANCES IN PB. 2212600100030
DETECTOR (GLASD) A 11.1 CM DIAMETER BY 0.635 CM THICK 6-LITHIUM-2212600100031
GLASS DETECTOR WAS USED AT THE 56.32 M MEASUREMENT. 2212600100032
.FIVE 11.1 CM DIAMETER BY 1.27 CM THICK 6-LITHIUM-GLASS2212600100033
DETECTORS WERE USED AT THE 191.49 M MEASUREMENT. 2212600100034
.AN ADDITIONAL 5 CM DIAMETER BY 0.635 CM THICK 2212600100035
6-LITHIUM-GLASS DETECTOR AT A 47 M STATION WAS USED 2212600100036
FOR MONITORING THE NEUTRON INTENSITIES. 2212600100037
SAMPLE .ENRICHED SAMPLES OF 135-BA, 137-BA AND 138-BA IN THE 2212600100038
FORM OF CARBONATE OR NITRATE POWDER WERE USED. EACH 2212600100039
SAMPLE WAS CONTAINED IN A 4 CM DIAMETER BY 1 CM THICK 2212600100040
ALUMINUM CASE WITH 0.2 CM ALUMINUM WINDOWS. THE ISO- 2212600100041
TOPIC ABUNDANCES AND THICKNESSES OF THE SAMPLES ARE 2212600100042
LISTED BELOW. 2212600100043
. 2212600100044
------------------------------------------------------2212600100045
ISOTOPE ABUNDANCE, PERCENT 2212600100046
135-BA 137-BA 138-BA 2212600100047
------------------------------------------------------2212600100048
130-BA L.T. 0.05 L.T. 0.03 L.T. 0.01 2212600100049
132-BA L.T. 0.05 L.T. 0.03 L.T. 0.01 2212600100050
134-BA 2.41 L.T. 0.05 L.T. 0.01 2212600100051
135-BA 79.04 L.T. 0.1 L.T. 0.02 2212600100052
136-BA 9.35 0.63 0.03 2212600100053
137-BA 2.91 81.9 0.25 2212600100054
138-BA 6.29 17.4 99.67 2212600100055
------------------------------------------------------2212600100056
THICKNESS, 2212600100057
ATOMS/BARN 0.0066 0.0064 0.125 2212600100058
------------------------------------------------------2212600100059
. 2212600100060
CORRECTION .THE RAW DATA WERE CORRECTED FOR DEAD-TIME LOSSES AND 2212600100061
FOR BACKGROUND. THE BACKGROUND WAS DETERMINED BY USING2212600100062
BLACK RESONANCE FILTERS CONSISTING OF NA, AL AND CO. 2212600100063
ERR-ANALYS (DATA-ERR) THE ERRORS GIVEN INCLUDE ONLY STATISTICAL 2212600100064
AND FITTING ERRORS. THE SYSTEMATICAL ERRORS ARE ESTI- 2212600100065
MATED TO BE ABOUT 5 PERCENT. 2212600100066
ANALYSIS .THE TRANSMISSION DATA WERE ANALYZED WITH THE MULTI- 2212600100067
LEVEL BREIT-WIGNER FORMULA. 2212600100068
STATUS .DATA TAKEN FROM MAIN REF. 2212600100069
HISTORY (891022C) N.O. 2212600100070
(891211E) 2212600100071
ENDBIB 69 0 2212600100072
NOCOMMON 0 0 2212600100073
ENDSUBENT 72 0 2212600199999
SUBENT 22126002 19891211 00002212600200001
BIB 3 5 2212600200002
REACTION 1(56-BA-135(N,0),,EN) 2212600200003
2(56-BA-135(N,EL),,WID,,2G) 2212600200004
STATUS .DATA TAKEN FROM MAIN REF. 2212600200005
HISTORY (891022C) N.O. 2212600200006
(891211E) 2212600200007
ENDBIB 5 0 2212600200008
NOCOMMON 0 0 2212600200009
DATA 3 68 2212600200010
DATA 1DATA 2DATA-ERR 2 2212600200011
EV MILLI-EV MILLI-EV 2212600200012
4.0450E+02 6.2500E+02 6.0000E+00 2212600200013
4.3270E+02 2.1000E+01 2.0000E+00 2212600200014
4.6510E+02 8.9900E+01 1.9000E+00 2212600200015
6.5060E+02 1.2900E+02 2.9000E+00 2212600200016
6.6710E+02 2.0000E+01 4.0000E+00 2212600200017
7.2040E+02 8.5000E+01 2.9000E+00 2212600200018
8.2930E+02 5.9000E+01 4.0000E+00 2212600200019
8.7820E+02 1.2820E+03 1.9000E+01 2212600200020
8.8970E+02 3.2000E+01 6.0000E+00 2212600200021
9.3880E+02 3.2200E+02 1.1000E+01 2212600200022
1.0280E+03 2.2900E+02 1.0000E+01 2212600200023
1.0630E+03 6.5000E+01 8.0000E+00 2212600200024
1.1130E+03 5.2000E+01 8.0000E+00 2212600200025
1.1510E+03 1.7600E+02 1.1000E+01 2212600200026
1.1940E+03 9.9300E+02 2.0000E+01 2212600200027
1.2220E+03 4.2000E+01 1.0000E+01 2212600200028
1.2730E+03 3.1200E+02 1.6000E+01 2212600200029
1.3430E+03 5.2000E+01 1.0000E+01 2212600200030
1.3540E+03 5.5000E+01 1.1000E+01 2212600200031
1.3930E+03 6.2800E+02 2.1000E+01 2212600200032
1.4010E+03 3.2000E+02 1.6000E+01 2212600200033
1.5130E+03 4.9000E+01 1.3000E+01 2212600200034
1.6160E+03 5.7500E+02 2.4000E+01 2212600200035
1.6690E+03 7.4200E+02 2.8000E+01 2212600200036
1.6960E+03 1.6600E+02 1.9000E+01 2212600200037
1.7110E+03 1.4500E+03 4.0000E+01 2212600200038
1.7510E+03 7.9100E+02 3.1000E+01 2212600200039
1.8590E+03 1.7300E+02 2.3000E+01 2212600200040
1.9690E+03 1.4000E+02 2.3000E+01 2212600200041
1.9800E+03 1.8100E+02 2.3000E+01 2212600200042
1.9950E+03 4.7000E+02 5.0000E+01 2212600200043
2.0370E+03 9.4000E+01 2.3000E+01 2212600200044
2.0590E+03 2.7200E+02 2.7000E+01 2212600200045
2.1390E+03 1.8100E+02 2.8000E+01 2212600200046
2.2500E+03 1.2700E+02 3.0000E+01 2212600200047
2.2990E+03 2.6000E+02 4.0000E+01 2212600200048
2.3430E+03 7.2000E+02 7.0000E+01 2212600200049
2.3840E+03 1.1400E+03 6.0000E+01 2212600200050
2.4010E+03 6.2000E+02 5.0000E+01 2212600200051
2.4990E+03 3.9000E+02 5.0000E+01 2212600200052
2.5230E+03 2.0000E+02 4.0000E+01 2212600200053
2.5990E+03 5.4000E+02 5.0000E+01 2212600200054
2.6600E+03 2.2000E+02 5.0000E+01 2212600200055
2.6860E+03 1.1000E+03 7.0000E+01 2212600200056
2.8090E+03 2.7000E+02 6.0000E+01 2212600200057
2.8240E+03 7.3000E+02 6.0000E+01 2212600200058
2.9190E+03 1.3600E+03 8.0000E+01 2212600200059
2.9460E+03 1.2600E+03 7.0000E+01 2212600200060
2.9780E+03 1.3500E+03 8.0000E+01 2212600200061
3.0210E+03 2.7600E+03 1.0000E+02 2212600200062
3.2690E+03 2.2200E+03 1.2000E+02 2212600200063
3.3940E+03 2.2300E+03 1.2000E+02 2212600200064
3.4110E+03 4.8000E+02 9.0000E+01 2212600200065
3.4540E+03 1.3000E+03 1.1000E+02 2212600200066
3.4720E+03 7.4000E+02 1.0000E+02 2212600200067
3.5960E+03 1.3000E+03 1.2000E+02 2212600200068
3.7000E+03 4.1000E+02 1.1000E+02 2212600200069
3.7440E+03 4.2300E+03 1.7000E+02 2212600200070
3.8150E+03 2.1000E+03 1.4000E+02 2212600200071
3.8950E+03 4.3000E+02 1.2000E+02 2212600200072
3.9500E+03 2.3600E+03 1.6000E+02 2212600200073
3.9760E+03 2.9800E+03 1.6000E+02 2212600200074
4.0660E+03 1.2700E+03 2.6000E+02 2212600200075
4.0910E+03 1.0100E+03 2.6000E+02 2212600200076
4.3240E+03 4.9000E+03 4.0000E+02 2212600200077
4.4000E+03 6.2000E+02 2.3000E+02 2212600200078
4.4340E+03 2.1300E+03 3.3000E+02 2212600200079
4.6200E+03 3.5000E+03 4.0000E+02 2212600200080
ENDDATA 70 0 2212600200081
ENDSUBENT 80 0 2212600299999
SUBENT 22126003 19891211 00002212600300001
BIB 3 5 2212600300002
REACTION 1(56-BA-137(N,0),,EN) 2212600300003
2(56-BA-137(N,EL),,WID,,2G) 2212600300004
STATUS .DATA TAKEN FROM MAIN REF. 2212600300005
HISTORY (891022C) N.O. 2212600300006
(891211E) 2212600300007
ENDBIB 5 0 2212600300008
NOCOMMON 0 0 2212600300009
DATA 3 38 2212600300010
DATA 1DATA 2DATA-ERR 2 2212600300011
EV EV EV 2212600300012
4.1830E+02 8.1000E-01 6.0000E-03 2212600300013
5.7660E+02 3.6700E-01 4.0000E-03 2212600300014
1.0450E+03 6.1000E-02 5.0000E-03 2212600300015
1.1940E+03 3.0100E-01 7.0000E-03 2212600300016
1.3430E+03 1.2450E+00 1.6000E-02 2212600300017
1.7290E+03 6.4900E-01 1.4000E-02 2212600300018
2.3520E+03 4.5000E-01 2.0000E-02 2212600300019
2.4070E+03 2.3700E+00 4.0000E-02 2212600300020
2.6320E+03 1.1400E+00 3.0000E-02 2212600300021
2.6860E+03 4.3200E+00 5.0000E-02 2212600300022
3.1370E+03 1.2000E-01 2.0000E-02 2212600300023
3.3370E+03 1.1000E-01 3.0000E-02 2212600300024
3.8930E+03 5.1800E+00 9.0000E-02 2212600300025
4.2760E+03 2.7000E-01 4.0000E-02 2212600300026
4.5790E+03 9.0000E-01 6.0000E-02 2212600300027
4.7010E+03 3.2000E-01 5.0000E-02 2212600300028
4.9630E+03 7.6200E+00 1.4000E-01 2212600300029
5.0390E+03 2.1000E-01 5.0000E-02 2212600300030
5.2640E+03 1.2600E+00 8.0000E-02 2212600300031
5.7910E+03 3.3200E+00 1.4000E-01 2212600300032
5.8500E+03 1.5600E+00 1.2000E-01 2212600300033
6.0100E+03 1.2500E+00 1.0000E-01 2212600300034
6.4290E+03 3.3600E+00 1.5000E-01 2212600300035
6.9870E+03 2.2400E+00 1.5000E-01 2212600300036
7.8570E+03 1.8500E+00 1.9000E-01 2212600300037
7.9740E+03 4.9500E+00 2.6000E-01 2212600300038
8.5620E+03 1.4800E+01 5.0000E-01 2212600300039
9.4170E+03 1.4600E+00 2.4000E-01 2212600300040
1.0079E+04 3.6000E+00 4.0000E-01 2212600300041
1.0261E+04 2.6000E+00 4.0000E-01 2212600300042
1.0535E+04 1.7100E+01 7.0000E-01 2212600300043
1.0613E+04 5.3000E+00 4.0000E-01 2212600300044
1.0931E+04 1.2500E+01 6.0000E-01 2212600300045
1.1856E+04 1.7000E+00 4.0000E-01 2212600300046
1.2343E+04 2.4000E+00 5.0000E-01 2212600300047
1.3574E+04 3.8000E+00 6.0000E-01 2212600300048
1.4504E+04 4.3000E+00 6.0000E-01 2212600300049
1.4941E+04 5.9000E+00 8.0000E-01 2212600300050
ENDDATA 40 0 2212600300051
ENDSUBENT 50 0 2212600399999
SUBENT 22126004 19891211 00002212600400001
BIB 3 5 2212600400002
REACTION 1(56-BA-138(N,0),,EN) 2212600400003
2(56-BA-138(N,EL),,WID,,2G) 2212600400004
STATUS .DATA TAKEN FROM MAIN REF. 2212600400005
HISTORY (891022C) N.O. 2212600400006
(891211E) 2212600400007
ENDBIB 5 0 2212600400008
NOCOMMON 0 0 2212600400009
DATA 3 12 2212600400010
DATA 1DATA 2DATA-ERR 2 2212600400011
KEV EV EV 2212600400012
6.4800E-01 5.0000E-03 4.0000E-04 2212600400013
1.9480E+00 1.0100E-01 8.0000E-03 2212600400014
4.7040E+00 8.1000E-01 6.0000E-02 2212600400015
7.8640E+00 5.1200E+00 1.7000E-01 2212600400016
1.5160E+01 3.4000E+00 1.6000E+00 2212600400017
2.4280E+01 5.0000E+00 3.0000E+00 2212600400018
3.0890E+01 1.9900E+02 8.0000E+00 2212600400019
4.0320E+01 6.8000E+01 1.8000E+01 2212600400020
5.0560E+01 2.5000E+02 2.0000E+01 2212600400021
5.5260E+01 7.5000E+01 1.8000E+01 2212600400022
5.9650E+01 1.0100E+02 2.2000E+01 2212600400023
6.3120E+01 1.1700E+02 3.5000E+01 2212600400024
ENDDATA 14 0 2212600400025
ENDSUBENT 24 0 2212600499999
SUBENT 22126005 19891211 00002212600500001
BIB 3 4 2212600500002
REACTION (56-BA-135(N,EL),,STF) 2212600500003
STATUS .DATA TAKEN FROM MAIN REF. 2212600500004
HISTORY (891022C) N.O. 2212600500005
(891211E) 2212600500006
ENDBIB 4 0 2212600500007
NOCOMMON 0 0 2212600500008
DATA 5 1 2212600500009
EN-MIN EN-MAX MOMENTUM L DATA DATA-ERR 2212600500010
KEV KEV NO-DIM NO-DIM NO-DIM 2212600500011
4.0000E-01 4.6000E+00 0.0000E+00 1.3300E-04 2.2000E-05 2212600500012
ENDDATA 3 0 2212600500013
ENDSUBENT 12 0 2212600599999
SUBENT 22126006 19891211 00002212600600001
BIB 3 4 2212600600002
REACTION (56-BA-137(N,EL),,STF) 2212600600003
STATUS .DATA TAKEN FROM MAIN REF. 2212600600004
HISTORY (891022C) N.O. 2212600600005
(891211E) 2212600600006
ENDBIB 4 0 2212600600007
NOCOMMON 0 0 2212600600008
DATA 5 1 2212600600009
EN-MIN EN-MAX MOMENTUM L DATA DATA-ERR 2212600600010
KEV KEV NO-DIM NO-DIM NO-DIM 2212600600011
4.0000E-01 1.5000E+01 0.0000E+00 5.1000E-05 1.2000E-05 2212600600012
ENDDATA 3 0 2212600600013
ENDSUBENT 12 0 2212600699999
SUBENT 22126007 19891211 00002212600700001
BIB 3 4 2212600700002
REACTION (56-BA-135(N,0),,D) 2212600700003
STATUS .DATA TAKEN FROM MAIN REF. 2212600700004
HISTORY (891022C) N.O. 2212600700005
(891211E) 2212600700006
ENDBIB 4 0 2212600700007
NOCOMMON 0 0 2212600700008
DATA 5 1 2212600700009
EN-MIN EN-MAX MOMENTUM L DATA DATA-ERR 2212600700010
KEV KEV NO-DIM EV EV 2212600700011
4.0000E-01 4.6000E+00 0.0000E+00 4.1000E+01 3.0000E+00 2212600700012
ENDDATA 3 0 2212600700013
ENDSUBENT 12 0 2212600799999
SUBENT 22126008 19891211 00002212600800001
BIB 3 4 2212600800002
REACTION (56-BA-137(N,0),,D) 2212600800003
STATUS .DATA TAKEN FROM MAIN REF. 2212600800004
HISTORY (891022C) N.O. 2212600800005
(891211E) 2212600800006
ENDBIB 4 0 2212600800007
NOCOMMON 0 0 2212600800008
DATA 5 1 2212600800009
EN-MIN EN-MAX MOMENTUM L DATA DATA-ERR 2212600800010
KEV KEV NO-DIM EV EV 2212600800011
4.0000E-01 1.5000E+01 0.0000E+00 2.7000E+02 2.8000E+01 2212600800012
ENDDATA 3 0 2212600800013
ENDSUBENT 12 0 2212600899999
ENDENTRY 8 0 2212699999999