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/* NRDF D1851 Data No.3 */
/*===================================================================*/
/* Bibliography */
/*===================================================================*/
\\BIB,3;
D#=D1851;
TITLE=/ Characteristics of binary scission configurations in
proton-induced fission of actinides /;
PURPOSE=/ To clarify the correlation between mass yield
distributions and scission configurations in low-energy
proton-induced fission of actinides, and to elucidate how
the bimodal properties vary as a function of fissioning
nuclei in wide range of actinide fission /;
ATH=(Y.L.ZHAO'1,3', T.OHTSUKI'2', Y.NAGAME'3', I.NISHINAKA'3',
K.TSUKADA'3', S.ICHIKAWA'3', H.IKEZOE'3', Y.HATSUKAWA'3',
K.HATA'3', M.TANIKAWA'4', Z.QIN'3', K.SUEKI'1', Y.OURA'1',
H.KUDO'5', H.NAKAHARA'1');
INST-ATH=(2JPNTMU'1', 2JPNTOH'2', 2JPNJAE'3', 2JPNTOK'4',
2JPNNII'5');
/* '1' Department of Chemistry */
/* '2' Laboratory of Nuclear Science */
/* '4' Department of Chemistry */
/* '5' Department of Chemistry */
REF=JRN;
VLP=239(1999)113;
RCTS=238U(P,FISSN), 232TH(P,FISSN), 244PU(P,FISSN);
PHQS=(ENGY-SPEC'6', FISSN-YLD);
/* '6' Total kinetic energy distribution */
/*===================================================================*/
/* Experimental Conditions */
/*===================================================================*/
\\EXP,3;
/* 2003-11-04 : Converted, Data converted from EXFOR O0699 */
/* Related references
- Y.Nagame et al., PL/B, 387(1996)26.
(Detail of experimental procedure and two-Gaussian analysis)
- Y.Nagame et al., JRN, 239(1999)97.
RTY=FISSN;
/* Additional results shown but not compiled
- Comparison with calculated values (Two-gaussian analysis. The
elongation properties of nuclei at scission in a wide range of
actinides fissions are studied. The results suggest that the
compact and the elongated scission configurations in light
actinides fission smoothly change to the scission properties of
the symmetric and the asymetric modes in heavy actinides
fission.)
- Distance of two charge centers at scission configurations
evaluated from the total kinetic energy of the fragment mass for
13 MeV p+238U fission. See Fig.2 of this reference.
CHM=ELM;
PHYS-FORM=SLD;
POL-TGT=0%;
ALGN-TGT=0%;
ACC=VDGT;
INST-ACC=2JPNJAE;
POL-PRJ=0%;
DET-PARTCL=X'7';
/* '7' Fission fragments */
COINC=NO;
ANT-COINC=NO;
DET-SYS=(MCPLT'8',SBD'9',MCPLT'10',PPAC'11',TOF'12');
/* '8' Used as stop detector of ToF1 telescope placed at
theta(lab)=50 deg */
/* '9' Used as stop and energy signals, located behind the ToF1
stop detector */
/* '10' Used as start detector of ToF2 telescope placed at
theta(lab)=130 deg */
/* '11' Used as stop detector of ToF2 telescope placed at
theta(lab)=130 deg */
/* '12' Flight pathes of two telescopes are 55 cm and 50 cm,
respectively. */
SOLID-ANGL=XMSR'13';
/* '13' 0.17 and 32 msr for ToF1 and ToF2, respectively */
ERS-DET=[2.5MEV'14';
/* '14' Overall resolution of kinetic energy. Resolution of mass
is about 2.0 u. */
CALB-DET=/ Velocity calibration was performed using the 240 MeV 127I
beam to bombard the thin targets (60 micro-gram/cm2 thick),
natAg, natIn, and 209Bi. Each target was evaporated on 30
micro-gram/cm2 thick carbon foils. The recoil nuclei and
the elastically scattered 127I ions were detected with the
present ToF system. /;
/* Experimental Method:
- Time-of-flight (Flight pathes of two telescopes are 55 cm and
50 cm, respectively.)
RCT=238U(P,FISSN);
PHQ=ENGY-SPEC'25';
/* '25' Total kinetic energy distribution */
THK-TGT=[0.07MG/CM**2;
BAC=C;
THK-BAC=0.03MG/CM**2;
INC-ENGY-LAB=13MEV;
/* Analysis:
- Decomposition of total kinetic energy (TKE) distribution into
low- and high-TKE components was done by using the two-Gaussian
analysis, described in detail in [Y.Nagame et al., Phys. Lett.
B387(1996)26].
/*===================================================================*/
/* Descriptive Parameters */
/*===================================================================*/
\\DATA,3;
INC-ENGY-LAB=13MEV;
EMT=FF;
A=130;
/*===================================================================*/
/* Data Table */
/*===================================================================*/
\DATA;
TOT-KIN-ENGY'26' COUNTS'27' DATA1'28' DATA2'29'
(MEV) (NODIM) (NODIM) (NODIM)
124. 0.98547 0.17658 0.00017
126. 0.98573 0.32857 0.00044
128. 1.9716 0.59203 0.00114
130. 0.98581 1.0329 0.0028
132. 0.98586 1.7452 0.00668
134. 1.972 2.8551 0.01533
136. 4.9308 4.5232 0.03397
138. 4.9313 6.9388 0.07259
140. 7.8908 10.308 0.14962
142. 11.837 14.827 0.29748
144. 15.785 20.653 0.57049
146. 19.732 27.857 1.0553
148. 29.602 36.383 1.8829
150. 48.354 46.016 3.2405
152. 54.279 56.356 5.3795
154. 65.141 66.834 8.6138
156. 84.887 76.751 13.304
158. 94.766 85.348 19.82
160. 118.47 91.903 28.481
162. 146.12 95.829 39.477
164. 149.09 96.758 52.779
166. 178.73 94.604 68.064
168. 205.41 89.568 84.665
170. 194.56 82.116 101.58
172. 194.57 72.9 117.56
174. 197.55 62.669 131.24
176. 205.46 52.168 141.31
178. 184.61 42.052 146.77
180. 173.01 32.824 147.03
182. 168.95 24.81 142.08
184. 148.21 18.159 132.43
186. 134.39 12.87 119.06
188. 94.866 8.8325 103.25
190. 73.13 5.8698 86.361
192. 72.147 3.7774 69.679
194. 57.326 2.3539 54.227
196. 39.537 1.4204 40.706
198. 44.482 0.82996 29.474
200. 20.759 0.46961 20.585
202. 9.8858 0.2573 13.868
204. 8.8977 0.13651 9.0111
206. 5.9324 0.07013 5.6479
208. 2.9663 0.03489 3.4145
210. 1.9775 0.01681 1.9912
\END;
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