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/* NRDF D1851 Data No.1 */
/*===================================================================*/
/* Bibliography */
/*===================================================================*/
\\BIB,1;
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,1;
/* 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'15';
/* '15' 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,1;
INC-ENGY-LAB=13MEV;
EMT=FF;
A=126;
/*===================================================================*/
/* Data Table */
/*===================================================================*/
\DATA;
TOT-KIN-ENGY'16' COUNTS'17' DATA1'18' DATA2'19'
(MEV) (NODIM) (NODIM) (NODIM)
132. 0.98636 1.6148 X
134. 1.973 2.6463 X
136. 2.9597 4.2002 X
138. 9.8675 6.4563 X
140. 6.9078 9.6118 X
142. 16.777 13.859 X
144. 22.701 19.352 X
146. 21.715 26.172 0.15012
148. 28.628 34.28 0.26943
150. 39.49 43.485 0.46682
152. 44.43 53.424 0.78079
154. 60.27 63.567 1.2607
156. 69.25 73.253 1.965
158. 82.757 81.755 2.9566
160. 98.962 88.369 4.2945
162. 114.58 92.508 6.0216
164. 117.55 93.79 8.1508
166. 83.968 92.095 10.651
168. 102.75 87.58 13.435
170. 110.66 80.663 16.36
172. 95.963 71.951 19.231
174. 74.98 62.159 21.822
176. 68.186 52.007 23.905
178. 69.178 42.142 25.28
180. 64.241 33.073 25.807
182. 56.338 25.137 25.432
184. 52.389 18.504 24.194
186. 26.69 13.192 22.218
188. 26.692 9.1085 19.697
190. 16.807 6.0909 16.857
192. 11.864 3.9447 13.927
194. 9.8873 2.4743 11.107
196. 4.944 1.503 8.5513
\END;
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