ENTRY O0632 20000424 0000O063200000001 SUBENT O0632001 20000424 0000O063200100001 BIB 15 72 O063200100002 TITLE Proton-Induced Fission Cross Sections For U-238, U- O063200100003 235, Th-232, Bi-209, and Au-197 at 100 to 340 MeV O063200100004 AUTHOR (H.M.STEINER,J.A.JUNGERMAN) O063200100005 INSTITUTE (1USABRK,1USADAV) O063200100006 REFERENCE (J,PR,101,807,1956) O063200100007 REL-REF (D,,J.A.JUNGERMAN,J,PR,79,632,1950) An Earlier O063200100008 Experiment. The Authors Believe It is in Error Due to O063200100009 Unreliable Operation of the Chamber. O063200100010 (N,,CHAMBERLAIN+,J,PR,83,923,1951) Details of the Beam O063200100011 Monitoring. O063200100012 FACILITY (SYNCY,1USACLA) O063200100013 SAMPLE The Samples, 0.6-1.1 Mg/Cm**2 Thick, About 2*2 Inch O063200100014 Area, were Prepared by Either Painting or Evaporation O063200100015 Onto 0.001-Inch Aluminum Foil. O063200100016 COMMENT - By Compiler - No Details Given For Purity of the O063200100017 Samples. O063200100018 METHOD (FISCT,EXTB,SITA,EDEG,PHD) The Full-Energy Proton Beam O063200100019 Had Energy Spread Less Than 1%. Beryllium Absobers O063200100020 Were Used to Reduce the Energy of the Beam. The Energy O063200100021 Of the Beam Passing the Fission Chamber was Measured O063200100022 With the Use of Additional Copper Absorbers and O063200100023 Ionization Chambers. O063200100024 DETECTOR (IOCH) A Cancellation-Type Ionization Chamber of 2-Pi O063200100025 Geometry, Filled with 1 Atmosphere of Hydrogen Gas, O063200100026 Consisted of Three Electrodes, Arranged So As to Form O063200100027 Two Adjacent Parallel-Plate Ionization Chambers. A O063200100028 Beam of Charged Particles Passing Through the Fission O063200100029 Chamber Produced Almost Equal Amounts of Ionization in O063200100030 Both these Regions. Almost Complete Cancellation of O063200100031 The Pulses Caused by the Beam Ionization Could be O063200100032 Obtained. The Beam was Monitored by an Additional O063200100033 Parallel-Plate Ionization Chamber Filled with 1 O063200100034 Atmosphere of Argon. See Rel-Ref For Details of the O063200100035 Beam Monitoring. O063200100036 PART-DET (FF). O063200100037 CORRECTION Performed: Background Pulses Due to Incomplete O063200100038 Cancellation of Proton-Induced Ionization: Less Than O063200100039 1% For Uranium-238, Uranium-235 and Thorium-232; Less O063200100040 Than 10% For Bismuth, and Less Than 25% For Gold. O063200100041 Sample-Thickness Corrections, 8-14%, Determined in O063200100042 Special Measurements with Thinner Samples at 336 MeV. O063200100043 Deviation of the Effective Solid Angle from 2-Pi, O063200100044 1.5%. O063200100045 The Neutron Contamination of the Beam, 2% For Uranium- O063200100046 235, 1% For the Other Target Nuclei. O063200100047 Negligible: the Loss of Fission Events Due to Pile-Up O063200100048 Of Fission Pulses, Less Than 1%. O063200100049 ERR-ANALYS (ERR-1) Uncertainty in Determination of Sample O063200100050 Thickness. O063200100051 (ERR-2) Uniformity of Sample Material. O063200100052 (ERR-3) Self-Absorption of Fission Fragments in the O063200100053 Sample Material. O063200100054 (ERR-4) Extrapolation to Zero Bias. O063200100055 (ERR-5) Momentum Transfer to the Target Nucleus. O063200100056 (ERR-6) Uncertainty Due to Determination of Beam O063200100057 Energy. O063200100058 (ERR-7) Calibration of Beam Monitor. O063200100059 (ERR-8) Geometry of the Chamber. O063200100060 (ERR-9) Total Systematic Error Given by Authors, As a O063200100061 Result of All Above Mentioned Contributions. O063200100062 (ERR-S) The Uncertainties Shown in the Figures and O063200100063 Given in the Data Sections are Purely Due to Counting O063200100064 Statistics. O063200100065 (EN-ERR) Data Reader Uncertainty. O063200100066 (ERR-10) Data Reader Uncertainty. O063200100067 STATUS (CURVE) From Fig. 7-11, Digitized by Compiler. O063200100068 HISTORY (19980512C) By Khlopin'S Institute - A.P. O063200100069 (19980525A) A Little Corrections in Bib Section of O063200100070 Subent O063200100071 001. O063200100072 (19980525U) Last checking has been done. O063200100073 (20000424A) DATE is corrected O063200100074 ENDBIB 72 0 O063200100075 COMMON 11 6 O063200100076 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 O063200100077 ERR-7 ERR-8 ERR-9 EN-ERR ERR-10 O063200100078 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT O063200100079 PER-CENT PER-CENT PER-CENT MEV PER-CENT O063200100080 3. 3. 5. 5. 1.5 1.O063200100081 3. 0.5 9. 1.5 3. O063200100082 ENDCOMMON 6 0 O063200100083 ENDSUBENT 82 0 O063200199999 SUBENT O0632002 20000424 0000O063200200001 BIB 4 9 O063200200002 REACTION (92-U-238(P,F),,SIG,,,EXP) O063200200003 REL-REF (D,C0372001,R.L.FOLGER+,J,PR,98,107,1955) RadiochemicalO063200200004 Work. The Integral Fission Cross Sections are not O063200200005 Compiled in the Mentioned Entry yet. O063200200006 MISC-COL (MISC) A Fractional Change in the Effective Solid O063200200007 Angle Due to the Center-Of-Mass Motion. O063200200008 ERR-ANALYS (MISC-ERR) No Explanations are Given by Authors. O063200200009 Compiler Assumes this Uncertainty is Totally or Mainly O063200200010 Due to Counting Statistics. O063200200011 ENDBIB 9 0 O063200200012 NOCOMMON 0 0 O063200200013 DATA 5 16 O063200200014 EN DATA ERR-S MISC MISC-ERR O063200200015 MEV MB MB NO-DIM NO-DIM O063200200016 114. 1370. 150. O063200200017 130. 1330. 45. O063200200018 132. 1350. 45. O063200200019 154. 1420. 50. O063200200020 158. 1470. 55. O063200200021 178. 1305. 30. O063200200022 182. 1360. 40. O063200200023 192. 1375. 25. 0.02 0.012 O063200200024 194. 1355. 45. O063200200025 216. 1305. 25. O063200200026 230. 1315. 15. O063200200027 254. 1325. 35. O063200200028 261. 1330. 25. O063200200029 288. 1370. 30. O063200200030 303. 1375. 25. O063200200031 336. 1345. 15. 0.037 0.011 O063200200032 ENDDATA 18 0 O063200200033 ENDSUBENT 32 0 O063200299999 SUBENT O0632003 20000424 0000O063200300001 BIB 1 1 O063200300002 REACTION (92-U-235(P,F),,SIG,,,EXP) O063200300003 ENDBIB 1 0 O063200300004 NOCOMMON 0 0 O063200300005 DATA 3 19 O063200300006 EN DATA ERR-S O063200300007 MEV MB MB O063200300008 114. 1665. 165. O063200300009 130. 1200. 40. O063200300010 132. 1505. 40. O063200300011 154. 1505. 50. O063200300012 158. 1350. 50. O063200300013 178. 1350. 30. O063200300014 182. 1310. 45. O063200300015 191. 1335. 35. O063200300016 193. 1320. 45. O063200300017 193. 1230. 20. O063200300018 216. 1270. 30. O063200300019 230. 1300. 25. O063200300020 242. 1350. 20. O063200300021 254. 1326. 40. O063200300022 261. 1355. 25. O063200300023 287. 1300. 35. O063200300024 290. 1235. 25. O063200300025 302. 1340. 25. O063200300026 336. 1295. 15. O063200300027 ENDDATA 21 0 O063200300028 ENDSUBENT 27 0 O063200399999 SUBENT O0632004 20000424 0000O063200400001 BIB 1 1 O063200400002 REACTION (90-TH-232(P,F),,SIG,,,EXP) O063200400003 ENDBIB 1 0 O063200400004 NOCOMMON 0 0 O063200400005 DATA 3 15 O063200400006 EN DATA ERR-S O063200400007 MEV MB MB O063200400008 114. 885. 85. O063200400009 130. 870. 30. O063200400010 132. 890. 35. O063200400011 154. 950. 40. O063200400012 158. 905. 25. O063200400013 178. 855. 20. O063200400014 182. 870. 25. O063200400015 191. 840. 25. O063200400016 216. 810. 25. O063200400017 230. 800. 15. O063200400018 254. 795. 30. O063200400019 261. 815. 20. O063200400020 288. 810. 25. O063200400021 303. 795. 20. O063200400022 336. 815. 25. O063200400023 ENDDATA 17 0 O063200400024 ENDSUBENT 23 0 O063200499999 SUBENT O0632005 20000424 0000O063200500001 BIB 2 2 O063200500002 REACTION (83-BI-209(P,F),,SIG,,,EXP) O063200500003 REL-REF (A,,W.F.BILLER,R,UCRL-2067,195301) O063200500004 ENDBIB 2 0 O063200500005 NOCOMMON 0 0 O063200500006 DATA 3 13 O063200500007 EN DATA ERR-S O063200500008 MEV MB MB O063200500009 132. 125. 8. O063200500010 154. 136. 8. O063200500011 158. 146. 8. O063200500012 178. 155. 5. O063200500013 182. 147. 11. O063200500014 191. 148. 10. O063200500015 216. 173. 5. O063200500016 230. 157. 5. O063200500017 254. 176. 4. O063200500018 261. 192. 5. O063200500019 288. 205. 7. O063200500020 303. 189. 6. O063200500021 336. 199. 2. O063200500022 ENDDATA 15 0 O063200500023 ENDSUBENT 22 0 O063200599999 SUBENT O0632006 20000424 0000O063200600001 BIB 1 1 O063200600002 REACTION (79-AU-197(P,F),,SIG,,,EXP) O063200600003 ENDBIB 1 0 O063200600004 NOCOMMON 0 0 O063200600005 DATA 3 11 O063200600006 EN DATA ERR-S O063200600007 MEV MB MB O063200600008 132. 17.2 3.3 O063200600009 158. 16.2 6.3 O063200600010 176. 32.1 2. O063200600011 182. 27.5 6. O063200600012 216. 38. 1.8 O063200600013 230. 37.9 1.1 O063200600014 253. 35.5 2.2 O063200600015 261. 38.2 1.8 O063200600016 287. 51.1 4.1 O063200600017 302. 41.7 1.2 O063200600018 336. 50.2 0.8 O063200600019 ENDDATA 13 0 O063200600020 ENDSUBENT 19 0 O063200699999 ENDENTRY 6 0 O063299999999