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/* NRDF D1851 Data No.6 */
/*===================================================================*/
/* Bibliography */
/*===================================================================*/
\\BIB,6;
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,6;
/* 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=FISSN-YLD;
THK-TGT=[0.07MG/CM**2;
BAC=C;
THK-BAC=0.03MG/CM**2;
INC-ENGY-LAB=13MEV;
/* Analysis:
- Two different methods are used for estimating the width of
distribution: (1) Integration method which is done by sorting
program called Lisa, (2)Standard deviation which was obtained
using the conventional formula of the deviation theory.
/*===================================================================*/
/* Descriptive Parameters */
/*===================================================================*/
\\DATA,6;
INC-ENGY-LAB=13MEV;
EMT=FF;
/*===================================================================*/
/* Data Table */
/*===================================================================*/
\DATA;
A YLD DATA1'38' DATA2'39' FLAG'40'
(NODIM) (ARB) (ARB) (ARB) (NODIM)
118. 0.18494 X X X
119. 0.20723 X X X
120. 0.19897 X X X
121. 0.18626 X X X
122. 0.20613 X X X
123. 0.20407 X X X
124. 0.24383 X X X
124. 0.25402 0.21995 0.03407 1.
125. 0.26542 X X X
126. 0.27843 X X X
126. 0.29368 0.23261 0.061072 1.
127. 0.30893 X X X
128. 0.38948 X X X
128. 0.42878 0.26691 0.16187 1.
129. 0.4697 X X X
130. 0.56704 X X X
130. 0.61411 0.25174 0.36237 1.
131. 0.66127 X X X
132. 0.73252 X X X
132. 0.78614 0.18782 0.59833 1.
133. 0.83975 X X X
133. 0.91672 0.12946 0.78726 1.
134. 0.87634 X X X
135. 0.9571 X X X
136. 0.96589 X X X
137. 0.97981 X X X
138. 0.9912 X X X
139. 1. X X X
140. 0.99687 X X X
141. 0.90733 X X X
142. 0.87056 X X X
143. 0.84372 X X X
144. 0.7885 X X X
145. 0.67956 X X X
146. 0.62847 X X X
147. 0.56714 X X X
148. 0.4658 X X X
149. 0.37512 X X X
150. 0.33608 X X X
151. 0.29124 X X X
152. 0.22693 X X X
153. 0.18247 X X X
154. 0.14622 X X X
155. 0.11033 X X X
156. 0.088797 X X X
157. 0.061119 X X X
158. 0.040965 X X X
159. 0.033113 X X X
160. 0.019108 X X X
161. 0.016035 X X X
162. 0.0098883 X X X
163. 0.0037501 X X X
164. 0.0040906 X X X
165. 0.0037484 X X X
\END;
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