ENTRY 22129 19910617 00002212900000001
SUBENT 22129001 19910617 00002212900100001
BIB 15 58 2212900100002
REFERENCE (J,PR/C,41,2556,9006) MAIN REFERENCE 2212900100003
(W,OLSSON,891109) 2212900100004
TITLE -THE 12-C(N,GAMMA0)13-C CROSS SECTION IN THE 8 - 11 MEV2212900100005
REGION. 2212900100006
COMMENT .THIS EXPERIMENT WAS PERFORMED IN AN ATTEMPT TO 2212900100007
RESOLVE DESCREPANCIES FOUND IN A PREVIOUS EXPERIMENT, 2212900100008
REF. NP/A,456,426 (1986), EXFOR 22142. 2212900100009
AUTHOR (A.HAAKANSSON,A.LINDHOLM,L.NILSSON,J.BLOMGREN, 2212900100010
P.O.SOEDERMAN,D.M.DRAKE,S.A.WENDER,N.OLSSON) 2212900100011
INSTITUTE (2SWDTLU) A.H., A.L., L.N., J.B., P.O.S. AND EXPERIMEN-2212900100012
TAL SITE. 2212900100013
(1USALAS) D.M.D., S.A.W. 2212900100014
(2SWDSWR) N.O. 2212900100015
FACILITY (VDGT ) THE UPPSALA EN TANDEM VAN DE GRAAFF ACCELERATOR2212900100016
DELIVERED 2 NS BUNCHES OF 7.8, 9.3 AND 10.8 MEV DEUTE-2212900100017
RONS AT A REPETITION RATE OF 2 MHZ. 2212900100018
INC-SOURCE (D-D ) NEUTRONS WERE PRODUCED USING A STAINLESS STEEL 2212900100019
DEUTERIUM GAS TARGET, 2.5 CM LONG AND WITH A 6 MG/CM2 2212900100020
THICK NICKEL ENTRANCE FOIL, FILLED TO A PRESSURE OF 2212900100021
1.7 ATM. 2212900100022
METHOD (TOF ) NEUTRON-GAMMA SEPARATION WAS OBTAINED WITH 2212900100023
TIME-OF-FLIGHT TECHNIQUES. 2212900100024
DETECTOR (NAICR) THE GAMMA-RAY SPECTROMETER CONSISTED OF A 2212900100025
NAI/TL/ CRYSTAL, 24 CM IN DIAMETER AND 36 CM LONG, 2212900100026
(SCIN ) SUURROUNDED BY A PLASTIC ANTICOINCIDENCE 2212900100027
SHIELD, CONSISTING OF AN ANNULUS DETECTOR AND A FRONT 2212900100028
DETECTOR. BORATED PARAFFIN WAS USED TO SHIELD THE DE- 2212900100029
TECTOR FROM ROOM-SCATTERED NEUTRONS, WHILE A LAYER OF 2212900100030
LEAD SERVED AS A SHIELD FOR BACKGROUND GAMMA-RAYS. A 2212900100031
HEVIMET SHADOW BAR ATTENUATED THE DIRECT TARGET NEU- 2212900100032
TRON FLUX. A PLUG OF LITHIUM HYDRIDE WAS INSERTED IN 2212900100033
THE COLLIMATOR TO REDUCE THE EFFECT OF SCATTERED NEU- 2212900100034
TRONS. THE DETECTOR RESPONSE FUNCTIONS WERE DETERMINED2212900100035
BY MEANS OF PROTON CAPTURE GAMMA-RAYS FROM 11-B. THE 2212900100036
DETECTOR EFFICIENCY WAS CALCULATED WITH A MONTE CARLO 2212900100037
COMPUTER CODE. 2212900100038
(SCIN ) NORMALIZATION OF DIFFERENT RUNS WAS ACCOMP- 2212900100039
LISHED WITH A PLASTIC NEUTRON MONITOR OPERATING IN TOF2212900100040
MODE, WHICH VIEWED THE NEUTRON PRODUCTION TARGET AT A 2212900100041
DISTANCE OF 4 M AND AT AN ANGLE OF 60 DEG. 2212900100042
MONITOR (20-CA-40(N,G)20-CA-41,PAR,DA) GROUND STATE TRANSITION.2212900100043
SAMPLE .CYLINDRICAL SAMPLES OF CARBON AND CALCIUM, 3.1 CM IN 2212900100044
DIAMETER AND 3.8 CM IN HEIGHT, ORIENTED WITH THE 2212900100045
SYMMETRY AXIS PERPENDICULAR TO THE REACTION PLANE AND 2212900100046
AT A DISTANCE OF 11 CM FROM THE TARGET CELL. THE CAR- 2212900100047
BON AND CALCIUM SAMPLE MASSES WERE 51.24 G AND 46.21 2212900100048
G, RESPECTIVELY, BOTH BEING OF NATURAL ISOTOPIC COM- 2212900100049
POSITION. 2212900100050
CORRECTION .THE DATA WERE CORRECTED FOR BACKGROUND, DEAD-TIME, 2212900100051
NEUTRON AND GAMMA ATTENUATION, AND MULTIPLE SCATTERING2212900100052
EFFECTS. 2212900100053
ERR-ANALYS (DATA-ERR) STATISTICAL ERRORS ONLY. IN ADDITION, THERE 2212900100054
IS A +/- 20 PERCENT SYSTEMATIC UNCERTAINTY. 2212900100055
STATUS .DATA TAKEN FROM MAIN REF. 2212900100056
HISTORY (891109C) N.O. 2212900100057
(891211E) 2212900100058
(910125A) S.W. MAIN REFERENCE ADDED, COMMENT ADDED 2212900100059
(910205E) 2212900100060
ENDBIB 58 0 2212900100061
NOCOMMON 0 0 2212900100062
ENDSUBENT 61 0 2212900199999
SUBENT 22129002 19891211 00002212900200001
BIB 3 4 2212900200002
REACTION (6-C-12(N,G)6-C-13,PAR,DA) GROUND STATE TRANSITION. 2212900200003
STATUS .DATA TAKEN FROM MAIN REF. 2212900200004
HISTORY (891109C) N.O. 2212900200005
(891211E) 2212900200006
ENDBIB 4 0 2212900200007
COMMON 1 3 2212900200008
E-LVL-FIN 2212900200009
MEV 2212900200010
0.0000E+00 2212900200011
ENDCOMMON 3 0 2212900200012
DATA 6 3 2212900200013
EN ANG DATA DATA-ERR MONIT MONIT-ERR 2212900200014
MEV ADEG MU-B/SR MU-B/SR MU-B/SR MU-B/SR 2212900200015
7.8000E+00 9.0000E+01 2.9500E+00 5.1000E-01 7.8900E+00 2.1000E-012212900200016
9.3000E+00 9.0000E+01 3.1400E+00 3.6000E-01 1.2680E+01 2.3000E-012212900200017
1.0800E+01 9.0000E+01 3.2200E+00 3.7000E-01 1.5650E+01 2.8000E-012212900200018
ENDDATA 5 0 2212900200019
ENDSUBENT 18 0 2212900299999
ENDENTRY 2 0 2212999999999