ENTRY O1284 20170419 O061O128400000001
SUBENT O1284001 20170419 O061O128400100001
BIB 15 79 O128400100002
TITLE Isobaric production cross sections from 0.6 GeV proton O128400100003
irradiation of neptunium and thorium using mass O128400100004
spectrometry O128400100005
AUTHOR (H.U.Wenger, A.Al Mazouzi, F.Atchison, M.Burghartz, O128400100006
R.Chawla, I.Gunther-Leopold, P.Heimgartner, Ch.Hellwig,O128400100007
F.Ingold, Z.Kopajtic, H.P.Linder) O128400100008
REFERENCE (J,NP/A,764,1,2006) O128400100009
REL-REF (N,,G.Ledergerber+,J,NT,114,194,1996). The wet O128400100010
fabrication route developed at PSI to form spherical O128400100011
fuel particles. O128400100012
(N,O0907001,H.U.Wenger+,J,ANE,26,141,1999) Previous O128400100013
results for natural uranium target. O128400100014
(R,,P.Marmy+,J,NIM/B,47,37,1990) Ring accelerator. O128400100015
INSTITUTE (2SWTPSI) O128400100016
(2SWTSWT) Ecole Polytechnique Federale de Lausanne. O128400100017
(2BLGMOL) O128400100018
SAMPLE The dense spherical ceramic particles of about 300 mum O128400100019
diameter. O128400100020
In the case of UO2 and ThO2, spherical particles of O128400100021
about 300 mum diameter were filled into the stainless O128400100022
steel target tubes, whereas for NpO2 large spheres wereO128400100023
first crushed to irregularly sized particles of O128400100024
90-300 mum. The 2.5 X 8 mm target tubes could thus O128400100025
contain about 150 mg of NpO2 particles, 240 mg of ThO2 O128400100026
and 250 mg of UO2 spheres, respectively. The targets O128400100027
were filled with helium and sealed. O128400100028
FACILITY (ACCEL,2SWTPSI) The PSI ring accelerator. O128400100029
(SPECM,2SWTPSI) Inductively coupled plasma mass O128400100030
spectrometer. O128400100031
MONITOR ((MONIT)13-AL-27(P,X)11-NA-22,CUM,SIG) O128400100032
The reference cross section is a weighted mean value ofO128400100033
the available experimental results in the energy rangeO128400100034
540-600 MeV. O128400100035
MONIT-REF (B0085001,J.E.Cline+,J,NP/A,169,437,1971) O128400100036
(,A.Grutter,J,ARI,33,725,1982) O128400100037
(,J.Tobailem,R,CEA-N-1466(5),103,1981) O128400100038
METHOD (EXTB,ACTIV) An irradiation head with three targets in O128400100039
series was used, which allowed the simultaneous O128400100040
irradiation of two actinide samples and an 27Al monitorO128400100041
rodlet, the targets themselves not affecting the protonO128400100042
beam significantly. O128400100043
COMMENT -By authors. High-fluence irradiations make it O128400100044
possible to produce enough fission and spallation O128400100045
products to use inductively coupled plasma mass O128400100046
spectrometry as the analytical technique. This method O128400100047
is the best for the measurement of isobaric production O128400100048
cross sections, since the cumulative isobaric mass O128400100049
yields in the beta-decay range, mass numbers <204, do O128400100050
not depend on time. O128400100051
CORRECTION For the correction of matrix effects, a known amount ofO128400100052
a thulium standard was added as an internal standard toO128400100053
all sample solutions. 169-Tm was selected as indicatorO128400100054
isotope since there was no detectable signal on mass O128400100055
169 in the concentrated solutions of both actinide O128400100056
targets. Thus, the possibility of interfering effectsO128400100057
with any fission product in this mass range could be O128400100058
excluded. O128400100059
Certain volatile and/or insoluble irradiation productsO128400100060
could not contribute to the measured mass yields and O128400100061
thus rendered the corresponding isobaric production O128400100062
cross sections too low. This was particularly the caseO128400100063
for several isotopes of the noble gases krypton and O128400100064
xenon, as well as for the insoluble oxides of palladiumO128400100065
and tin. The corresponding mass yields were upscaled O128400100066
by using calculated extrapolation factors, deduced by O128400100067
following a procedure similar to that used for resultsO128400100068
from gamma-spectrometry. The correction factor values O128400100069
were mostly in the range 1 to 3. For mass numbers 106,O128400100070
108, and 110, the insoluble oxides of palladium have O128400100071
dominant contributions, and the corresponding O128400100072
correction factors were between 3 and 6. O128400100073
ADD-RES (COMP) Codes FUSSPOT and HETC/RAL. The experimental O128400100074
Results are better predicted by the code FUSSPOT than O128400100075
by HETC/RAL. O128400100076
STATUS (TABLE) Data tables were received from H.U.Wenger O128400100077
HISTORY (20051216C) F.Ch O128400100078
(20060222R) Data tables were received from H.U.Wenger O128400100079
(20060302U) Last checking has been done. O128400100080
(20170419U) SD:Illegal blank deleted from author's listO128400100081
ENDBIB 79 0 O128400100082
COMMON 3 3 O128400100083
EN MONIT MONIT-ERR O128400100084
MEV MB MB O128400100085
590. 14.5 0.8 O128400100086
ENDCOMMON 3 0 O128400100087
ENDSUBENT 86 0 O128400199999
SUBENT O1284002 20060302 O026O128400200001
BIB 4 15 O128400200002
REACTION (93-NP-237(P,F),,SIG) O128400200003
ANALYSIS The total fission cross sections for the target O128400200004
nuclides have been made by first least-squares fitting O128400200005
Gaussian bell-shaped curves to each set of mass O128400200006
spectrometric results over the fission hump and then O128400200007
numerically integrating the corresponding curves. O128400200008
STATUS (DEP,O1284004) O128400200009
ERR-ANALYS (ERR-T) The error in the experimental fission cross O128400200010
sections. The uncertainty includes: O128400200011
(ERR-1) The uncertainty of mass spectrometric O128400200012
measurements. O128400200013
(ERR-2) The uncertainty of 27Al(P,X)22Na cross sectionO128400200014
for fluence determination. O128400200015
(ERR-3) The uncertainty of least squares fitting O128400200016
procedure. O128400200017
ENDBIB 15 0 O128400200018
COMMON 3 3 O128400200019
ERR-1 ERR-2 ERR-3 O128400200020
PER-CENT PER-CENT PER-CENT O128400200021
10. 5. 3. O128400200022
ENDCOMMON 3 0 O128400200023
DATA 2 1 O128400200024
DATA ERR-T O128400200025
B B O128400200026
1.82 0.33 O128400200027
ENDDATA 3 0 O128400200028
ENDSUBENT 27 0 O128400299999
SUBENT O1284003 20060302 O026O128400300001
BIB 4 15 O128400300002
REACTION (90-TH-232(P,F),,SIG) O128400300003
ANALYSIS The total fission cross sections for the target O128400300004
nuclides have been made by first least-squares fitting O128400300005
Gaussian bell-shaped curves to each set of mass O128400300006
spectrometric results over the fission hump and then O128400300007
numerically integrating the corresponding curves. O128400300008
STATUS (DEP,O1284005) O128400300009
ERR-ANALYS (ERR-T) The error in the experimental fission cross O128400300010
sections. The uncertainty includes: O128400300011
(ERR-1) The uncertainty of mass spectrometric O128400300012
measurements. O128400300013
(ERR-2) The uncertainty of 27Al(P,X)22Na cross sectionO128400300014
for fluence determination. O128400300015
(ERR-3) The uncertainty of least squares fitting O128400300016
procedure. O128400300017
ENDBIB 15 0 O128400300018
COMMON 3 3 O128400300019
ERR-1 ERR-2 ERR-3 O128400300020
PER-CENT PER-CENT PER-CENT O128400300021
10. 5. 3. O128400300022
ENDCOMMON 3 0 O128400300023
DATA 2 1 O128400300024
DATA ERR-T O128400300025
B B O128400300026
0.889 0.16 O128400300027
ENDDATA 3 0 O128400300028
ENDSUBENT 27 0 O128400399999
SUBENT O1284004 20060302 O026O128400400001
BIB 2 2 O128400400002
REACTION (93-NP-237(P,X)MASS,,SIG) O128400400003
ERR-ANALYS (ERR-T) The overall error is estimated to be about 10%O128400400004
ENDBIB 2 0 O128400400005
COMMON 1 3 O128400400006
ERR-T O128400400007
PER-CENT O128400400008
10. O128400400009
ENDCOMMON 3 0 O128400400010
DATA 2 71 O128400400011
MASS DATA O128400400012
NO-DIM MB O128400400013
69. 7.4 O128400400014
70. 2.2 O128400400015
71. 3.3 O128400400016
72. 5.6 O128400400017
73. 5.2 O128400400018
74. 5.4 O128400400019
77. 8.2 O128400400020
82. 9.9 O128400400021
85. 44.5 O128400400022
86. 55.4 O128400400023
87. 61.8 O128400400024
88. 65.3 O128400400025
91. 53.4 O128400400026
93. 87.3 O128400400027
99. 88.9 O128400400028
101. 83.7 O128400400029
102. 80.2 O128400400030
103. 83.3 O128400400031
104. 64.2 O128400400032
106. 79.4 O128400400033
108. 26.8 O128400400034
109. 76. O128400400035
110. 48.8 O128400400036
111. 66.1 O128400400037
112. 65.9 O128400400038
113. 63.3 O128400400039
114. 67.6 O128400400040
115. 68.2 O128400400041
116. 53.9 O128400400042
117. 50.5 O128400400043
120. 42. O128400400044
121. 26. O128400400045
122. 24.1 O128400400046
123. 17.4 O128400400047
124. 19.7 O128400400048
125. 31.7 O128400400049
128. 23.1 O128400400050
130. 69.2 O128400400051
133. 52. O128400400052
134. 44.7 O128400400053
135. 44.1 O128400400054
136. 42.9 O128400400055
137. 40.4 O128400400056
138. 45.8 O128400400057
139. 36. O128400400058
140. 31.7 O128400400059
141. 27.6 O128400400060
142. 23.8 O128400400061
143. 22. O128400400062
144. 18.9 O128400400063
145. 16.2 O128400400064
146. 13.1 O128400400065
147. 10.6 O128400400066
148. 8.3 O128400400067
149. 7.2 O128400400068
150. 5.3 O128400400069
151. 4.5 O128400400070
152. 3.2 O128400400071
153. 2.5 O128400400072
154. 2. O128400400073
155. 1.4 O128400400074
156. 0.93 O128400400075
157. 0.44 O128400400076
194. 0.19 O128400400077
195. 0.7 O128400400078
204. 5. O128400400079
206. 67.5 O128400400080
207. 69.3 O128400400081
208. 149.2 O128400400082
209. 115.2 O128400400083
232. 93.8 O128400400084
ENDDATA 73 0 O128400400085
ENDSUBENT 84 0 O128400499999
SUBENT O1284005 20060302 O026O128400500001
BIB 2 2 O128400500002
REACTION (90-TH-232(P,X)MASS,,SIG) O128400500003
ERR-ANALYS (ERR-T) The overall error is estimated to be about 10%O128400500004
ENDBIB 2 0 O128400500005
COMMON 1 3 O128400500006
ERR-T O128400500007
PER-CENT O128400500008
10. O128400500009
ENDCOMMON 3 0 O128400500010
DATA 2 57 O128400500011
MASS DATA O128400500012
NO-DIM MB O128400500013
77. 4.1 O128400500014
85. 15.4 O128400500015
86. 21.4 O128400500016
87. 24.7 O128400500017
88. 24.3 O128400500018
89. 30.3 O128400500019
91. 30.9 O128400500020
93. 30.7 O128400500021
99. 41.5 O128400500022
101. 37.5 O128400500023
102. 35.7 O128400500024
103. 35.9 O128400500025
104. 33.4 O128400500026
106. 46.7 O128400500027
108. 15.6 O128400500028
109. 43.8 O128400500029
110. 28.4 O128400500030
111. 45.1 O128400500031
112. 42.8 O128400500032
113. 40.7 O128400500033
114. 43.8 O128400500034
115. 57.9 O128400500035
117. 28.2 O128400500036
118. 23.1 O128400500037
120. 14.6 O128400500038
121. 20.8 O128400500039
122. 17. O128400500040
123. 12.6 O128400500041
126. 25.7 O128400500042
128. 9.6 O128400500043
130. 26. O128400500044
133. 14.9 O128400500045
134. 15.2 O128400500046
135. 14.1 O128400500047
136. 11.3 O128400500048
137. 11.5 O128400500049
138. 12. O128400500050
139. 11.7 O128400500051
140. 8.6 O128400500052
141. 8.3 O128400500053
142. 8.1 O128400500054
143. 6. O128400500055
144. 5. O128400500056
145. 3.3 O128400500057
146. 2.4 O128400500058
147. 1.5 O128400500059
148. 0.84 O128400500060
149. 0.33 O128400500061
195. 1.7 O128400500062
197. 6.2 O128400500063
203. 7.3 O128400500064
204. 23.5 O128400500065
205. 12. O128400500066
206. 55.7 O128400500067
207. 95.6 O128400500068
208. 72.9 O128400500069
209. 94.1 O128400500070
ENDDATA 59 0 O128400500071
ENDSUBENT 70 0 O128400599999
SUBENT O1284006 20060302 O026O128400600001
BIB 2 2 O128400600002
REACTION (92-U-0(P,X)MASS,,SIG) O128400600003
ERR-ANALYS (ERR-T) The overall error is estimated to be about 10%O128400600004
ENDBIB 2 0 O128400600005
COMMON 1 3 O128400600006
ERR-T O128400600007
PER-CENT O128400600008
10. O128400600009
ENDCOMMON 3 0 O128400600010
DATA 2 55 O128400600011
MASS DATA O128400600012
NO-DIM MB O128400600013
69. 13.3 O128400600014
85. 15. O128400600015
86. 20. O128400600016
87. 56.8 O128400600017
88. 74.1 O128400600018
89. 81. O128400600019
91. 105.1 O128400600020
92. 134.2 O128400600021
93. 74.6 O128400600022
94. 123.2 O128400600023
95. 83.4 O128400600024
96. 92.6 O128400600025
97. 83.5 O128400600026
98. 78. O128400600027
99. 79.6 O128400600028
100. 80.4 O128400600029
101. 67.1 O128400600030
102. 64.6 O128400600031
103. 64.7 O128400600032
104. 57.6 O128400600033
108. 39.3 O128400600034
109. 68.8 O128400600035
110. 41.5 O128400600036
111. 63.9 O128400600037
112. 61.8 O128400600038
113. 60.3 O128400600039
114. 62.7 O128400600040
115. 76.3 O128400600041
120. 58.1 O128400600042
121. 72.7 O128400600043
122. 43.7 O128400600044
123. 41.7 O128400600045
124. 33.2 O128400600046
125. 53.2 O128400600047
130. 40.9 O128400600048
133. 34.1 O128400600049
134. 31.7 O128400600050
135. 38.1 O128400600051
136. 32.7 O128400600052
137. 35.5 O128400600053
138. 56.3 O128400600054
139. 30.1 O128400600055
140. 26.3 O128400600056
141. 14.8 O128400600057
142. 19.2 O128400600058
143. 14.5 O128400600059
144. 11.4 O128400600060
145. 9.6 O128400600061
146. 6.3 O128400600062
147. 5.2 O128400600063
204. 9.1 O128400600064
206. 64.4 O128400600065
207. 68.1 O128400600066
208. 123.4 O128400600067
209. 10.2 O128400600068
ENDDATA 57 0 O128400600069
ENDSUBENT 68 0 O128400699999
ENDENTRY 6 0 O128499999999