ENTRY O0877 20090504 O040O087700000001 SUBENT O0877001 20090504 O040O087700100001 BIB 10 36 O087700100002 TITLE Cross section for 170 degrees backscattering of He-4 O087700100003 from oxygen in the energy range of 2.0-9.0 MeV. O087700100004 AUTHOR (Huan-Sheng Cheng, Hao Shen, Jiayong Tang, Fujia Yang) O087700100005 INSTITUTE (3CPRFUD) O087700100006 REFERENCE (J,NIM/B,83,449,1993) O087700100007 (J,ASI/OE,2,641,1993) O087700100008 SAMPLE Thin targets were used in order to reduce the O087700100009 scattering of ions from the substrates. Aluminium O087700100010 containing natural oxygen was deposited on a self- O087700100011 supporting carbon film (40 nm) and coated with a layer O087700100012 of 10 nm Ag. Targets of different thickness were used O087700100013 for the scans over narrow resonances and over slowly O087700100014 varying portions, with an energy loss of 4 and 8-keV, O087700100015 respectively, in an Al/2-O/3 layer for 3-MeV alpha O087700100016 particles. Because the elastic scattering cross O087700100017 sections for silver is expected to be essentially O087700100018 rutherfordlike even at 9 MeV, the silver film can be O087700100019 used as a reference. O087700100020 DETECTOR (SIBAR) Two surface barrier detector. O087700100021 The scattered ions were usually detected by an annular O087700100022 surface barrier detector with an energy resolution of O087700100023 25-keV and sensitive area of 140 mm**2. Another O087700100024 surface barrier detector was with an energy resolution O087700100025 15-keV and a sensitive area of 28 mm**2. O087700100026 FACILITY (VDGT,3CPRFUD) A NEC 9SDH-2 pelletron tandem at Fudan O087700100027 university. O087700100028 METHOD (BCINT) O087700100029 ADD-RES (COMP).The threshold energies of oxygen at which the O087700100030 backscattering cross sections begin to departure from O087700100031 their Rutherford values have been measured. The O087700100032 experimental results were compared with the predictionsO087700100033 from the analytical formulae developed by Bozoian et. O087700100034 al. O087700100035 HISTORY (20010613C) O087700100036 (20030501A) New reference was added.Targets was replaceO087700100037 to O-16. New subent was added. O087700100038 ENDBIB 36 0 O087700100039 NOCOMMON 0 0 O087700100040 ENDSUBENT 39 0 O087700199999 SUBENT O0877002 20090504 O040O087700200001 BIB 4 12 O087700200002 REACTION (8-O-16(A,EL)8-O-16,,DA,,RTH) O087700200003 REL-REF (A,C0091001,J.A.LEAVITT+,J,NIM/B,44,260,1990) O087700200004 It is for the 3500-3800 keV energy region. Data were inO087700200005 agreement within 3%. O087700200006 (D,C0751001,J.JOHN+,J,PR,181,1455,1969) O087700200007 For the 5.55-5.85 MeV region, the were 20% and 10% O087700200008 larger than those obtained by John at scattering anglesO087700200009 165.5 degree and 175.7 degree, respectively. O087700200010 All the comments by authors. O087700200011 STATUS (TABLE) Table 1 O087700200012 ERR-ANALYS (ERR-T).The uncertainty in the cross section is O087700200013 reported by authors. O087700200014 ENDBIB 12 0 O087700200015 COMMON 1 3 O087700200016 ANG O087700200017 ADEG O087700200018 170. O087700200019 ENDCOMMON 3 0 O087700200020 DATA 3 26 O087700200021 EN DATA ERR-T O087700200022 KEV NO-DIM NO-DIM O087700200023 3500. 0.98 0.03 O087700200024 3525. 0.99 0.03 O087700200025 3550. 1.01 0.03 O087700200026 3575. 1.05 0.03 O087700200027 3600. 1.05 0.03 O087700200028 3625. 1.04 0.03 O087700200029 3650. 1.12 0.03 O087700200030 3675. 1.1 0.03 O087700200031 3700. 1.15 0.03 O087700200032 3725. 1.14 0.03 O087700200033 3750. 1.19 0.04 O087700200034 3775. 1.16 0.04 O087700200035 3800. 1.21 0.04 O087700200036 5550. 9.6 0.3 O087700200037 5575. 9.6 0.3 O087700200038 5600. 10.1 0.3 O087700200039 5625. 10.1 0.3 O087700200040 5650. 10.6 0.3 O087700200041 5675. 10.2 0.3 O087700200042 5700. 9.1 0.3 O087700200043 5725. 10.3 0.3 O087700200044 5750. 10.1 0.3 O087700200045 5775. 10.1 0.3 O087700200046 5800. 10.2 0.3 O087700200047 5825. 9.6 0.3 O087700200048 5850. 9.8 0.3 O087700200049 ENDDATA 28 0 O087700200050 ENDSUBENT 49 0 O087700299999 SUBENT O0877003 20090504 O040O087700300001 BIB 4 26 O087700300002 REACTION (8-O-16(A,EL)8-O-16,,DA,,RTH) O087700300003 REL-REF (A,C0751001,J.JOHN+,J,PR,181,1455,1969) O087700300004 For the 8.50-8.80 MeV energy range,the data measured O087700300005 at scattering angles 165 and 175-degrees were in O087700300006 agreement with those made by John+ at scattering O087700300007 angles 165.6 and 175.6 degrees within 8% and 3%, O087700300008 respectively. This discrepancy is partly accounted for O087700300009 by the fact that extracting accurate cross section O087700300010 values from the small-scale graph by John is difficult.O087700300011 (A,,J.A.MARTIN+,J,APL,52,2177,1988) O087700300012 The cross section values measured by Martin+ for O087700300013 8.5-8.8 MeV at 166 degree are in agreement with this O087700300014 experiment at 165 degree within 3%. O087700300015 (D,,J.C.BARBOUR+,J,PR/B,38,7005,1988) O087700300016 The cross section values measured by Barbour+ for O087700300017 8.7 MeV at 164 degree is 22, which is 21% less than O087700300018 that in data-section. In order to avoid the error due O087700300019 to the uncertainty in scattering angle, the cross O087700300020 section can be measured at certain scattering angle andO087700300021 subtended solid angle by using a thick-high-z oxide O087700300022 target, in this experiment, highly pure Y/2-O/3 powder,O087700300023 which was pressed into a small disc 1 mm thick and a O087700300024 diameter of 1 cm, was used as target. O087700300025 All the comments by authors. O087700300026 STATUS (TABLE).Table 2 O087700300027 ERR-ANALYS (ERR-T).The uncertainty is reported by authors in tableO087700300028 ENDBIB 26 0 O087700300029 NOCOMMON 0 0 O087700300030 DATA 4 50 O087700300031 EN ANG DATA ERR-T O087700300032 KEV ADEG NO-DIM NO-DIM O087700300033 8300. 170. 16.2 0.5 O087700300034 8300. 175. 21.1 0.6 O087700300035 8350. 160. 23.4 0.7 O087700300036 8350. 165. 29.7 0.9 O087700300037 8350. 170. 30.9 0.9 O087700300038 8350. 175. 35.6 1. O087700300039 8400. 160. 27.3 0.8 O087700300040 8400. 165. 30.2 0.9 O087700300041 8400. 170. 33.8 1. O087700300042 8400. 175. 36.6 1. O087700300043 8450. 160. 25.3 0.8 O087700300044 8450. 165. 29.6 0.9 O087700300045 8450. 170. 36.2 1. O087700300046 8450. 175. 38.8 1. O087700300047 8500. 160. 27. 0.7 O087700300048 8500. 165. 30.4 0.9 O087700300049 8500. 170. 34.6 1. O087700300050 8500. 175. 38. 1. O087700300051 8550. 160. 24.4 0.7 O087700300052 8550. 165. 29. 0.9 O087700300053 8550. 170. 34.6 1. O087700300054 8550. 175. 37.8 1. O087700300055 8600. 160. 24.4 0.7 O087700300056 8600. 165. 29.9 0.9 O087700300057 8600. 170. 34.9 1. O087700300058 8600. 175. 38. 1. O087700300059 8650. 160. 24. 0.7 O087700300060 8650. 165. 29.8 0.9 O087700300061 8650. 170. 33.5 1. O087700300062 8650. 175. 37. 1. O087700300063 8700. 160. 23. 0.7 O087700300064 8700. 165. 28. 0.8 O087700300065 8700. 170. 32.7 1. O087700300066 8700. 175. 38.1 1. O087700300067 8750. 160. 22.4 0.7 O087700300068 8750. 165. 27.1 0.8 O087700300069 8750. 170. 32. 1. O087700300070 8750. 175. 36.6 1. O087700300071 8800. 160. 22.1 0.7 O087700300072 8800. 165. 27.5 0.8 O087700300073 8800. 170. 31. 0.9 O087700300074 8800. 175. 33.8 1. O087700300075 8850. 160. 21.6 0.6 O087700300076 8850. 165. 25. 0.8 O087700300077 8850. 170. 31.1 0.9 O087700300078 8850. 175. 34.3 1. O087700300079 8900. 160. 6.63 0.2 O087700300080 8900. 165. 6.3 0.2 O087700300081 8900. 170. 25. 0.8 O087700300082 8900. 175. 16.5 0.5 O087700300083 ENDDATA 52 0 O087700300084 ENDSUBENT 83 0 O087700399999 SUBENT O0877004 20090504 O040O087700400001 BIB 3 4 O087700400002 REACTION (8-O-16(A,EL)8-O-16,,DA,,RTH) O087700400003 HISTORY (20090506C).New subent was added. O087700400004 STATUS (TABLE) Data were taken from IBANDL. O087700400005 See http://www-nds.iaea.org/ibandl O087700400006 ENDBIB 4 0 O087700400007 COMMON 1 3 O087700400008 ANG O087700400009 ADEG O087700400010 170. O087700400011 ENDCOMMON 3 0 O087700400012 DATA 2 333 O087700400013 EN DATA O087700400014 KEV NO-DIM O087700400015 2000.00000 1.00000 O087700400016 2050.00000 0.98000 O087700400017 2100.00000 1.00000 O087700400018 2150.00000 1.02000 O087700400019 2200.00000 1.02000 O087700400020 2250.00000 0.98000 O087700400021 2300.00000 0.96000 O087700400022 2350.00000 0.95000 O087700400023 2400.00000 0.88000 O087700400024 2450.00000 0.77000 O087700400025 2475.00000 0.58000 O087700400026 2500.00000 1.70000 O087700400027 2525.00000 1.59000 O087700400028 2550.00000 1.38000 O087700400029 2575.00000 1.30000 O087700400030 2600.00000 1.24000 O087700400031 2625.00000 1.25000 O087700400032 2650.00000 1.24000 O087700400033 2700.00000 1.24000 O087700400034 2750.00000 1.23000 O087700400035 2800.00000 1.29000 O087700400036 2825.00000 1.30000 O087700400037 2850.00000 1.40000 O087700400038 2875.00000 1.43000 O087700400039 2900.00000 1.44000 O087700400040 2925.00000 1.52000 O087700400041 2950.00000 1.61000 O087700400042 2975.00000 1.92000 O087700400043 3000.00000 2.89000 O087700400044 3010.00000 3.88000 O087700400045 3016.00000 4.68000 O087700400046 3018.00000 5.37000 O087700400047 3020.00000 6.18000 O087700400048 3025.00000 9.47000 O087700400049 3027.00000 12.60000 O087700400050 3029.00000 18.10000 O087700400051 3032.00000 21.90000 O087700400052 3034.00000 23.40000 O087700400053 3035.00000 22.70000 O087700400054 3037.00000 14.90000 O087700400055 3039.00000 11.90000 O087700400056 3041.00000 8.30000 O087700400057 3043.00000 6.00000 O087700400058 3045.00000 4.88000 O087700400059 3049.00000 2.88000 O087700400060 3053.00000 1.67000 O087700400061 3057.00000 1.03000 O087700400062 3065.00000 0.62000 O087700400063 3075.00000 0.38000 O087700400064 3080.00000 0.53000 O087700400065 3100.00000 0.64000 O087700400066 3125.00000 0.63000 O087700400067 3150.00000 0.80000 O087700400068 3175.00000 0.80000 O087700400069 3200.00000 0.98000 O087700400070 3225.00000 0.90000 O087700400071 3250.00000 1.04000 O087700400072 3275.00000 1.07000 O087700400073 3300.00000 1.18000 O087700400074 3308.00000 1.29000 O087700400075 3328.00000 1.56000 O087700400076 3338.00000 1.78000 O087700400077 3348.00000 2.25000 O087700400078 3358.00000 4.19000 O087700400079 3363.00000 6.14000 O087700400080 3368.00000 5.77000 O087700400081 3373.00000 2.84000 O087700400082 3383.00000 1.26000 O087700400083 3388.00000 1.03000 O087700400084 3393.00000 0.91000 O087700400085 3400.00000 0.77000 O087700400086 3425.00000 0.80000 O087700400087 3450.00000 0.90000 O087700400088 3475.00000 0.98000 O087700400089 3500.00000 0.98000 O087700400090 3525.00000 0.99000 O087700400091 3550.00000 1.01000 O087700400092 3575.00000 1.05000 O087700400093 3600.00000 1.05000 O087700400094 3625.00000 1.04000 O087700400095 3650.00000 1.12000 O087700400096 3675.00000 1.10000 O087700400097 3700.00000 1.15000 O087700400098 3725.00000 1.14000 O087700400099 3750.00000 1.20000 O087700400100 3775.00000 1.18000 O087700400101 3800.00000 1.21000 O087700400102 3825.00000 1.27000 O087700400103 3850.00000 1.36000 O087700400104 3855.00000 1.49000 O087700400105 3860.00000 1.58000 O087700400106 3865.00000 1.79000 O087700400107 3870.00000 2.55000 O087700400108 3875.00000 4.37000 O087700400109 3877.00000 4.55000 O087700400110 3880.00000 1.48000 O087700400111 3885.00000 1.36000 O087700400112 3900.00000 1.07000 O087700400113 3925.00000 1.14000 O087700400114 3950.00000 1.17000 O087700400115 3975.00000 1.24000 O087700400116 4000.00000 1.22000 O087700400117 4025.00000 1.27000 O087700400118 4050.00000 1.33000 O087700400119 4075.00000 1.33000 O087700400120 4100.00000 1.31000 O087700400121 4125.00000 1.41000 O087700400122 4150.00000 1.45000 O087700400123 4175.00000 1.38000 O087700400124 4200.00000 1.50000 O087700400125 4220.00000 1.61000 O087700400126 4240.00000 1.68000 O087700400127 4260.00000 1.55000 O087700400128 4280.00000 1.69000 O087700400129 4300.00000 1.82000 O087700400130 4325.00000 1.78000 O087700400131 4350.00000 1.92000 O087700400132 4375.00000 1.99000 O087700400133 4400.00000 2.26000 O087700400134 4425.00000 2.29000 O087700400135 4450.00000 2.43000 O087700400136 4475.00000 2.47000 O087700400137 4500.00000 2.72000 O087700400138 4525.00000 3.06000 O087700400139 4550.00000 3.27000 O087700400140 4575.00000 3.42000 O087700400141 4600.00000 3.69000 O087700400142 4625.00000 3.90000 O087700400143 4650.00000 4.65000 O087700400144 4675.00000 4.73000 O087700400145 4700.00000 5.10000 O087700400146 4725.00000 5.54000 O087700400147 4750.00000 6.00000 O087700400148 4775.00000 6.51000 O087700400149 4800.00000 6.88000 O087700400150 4825.00000 7.50000 O087700400151 4850.00000 7.75000 O087700400152 4875.00000 8.31000 O087700400153 4880.00000 9.57000 O087700400154 4900.00000 10.60000 O087700400155 4920.00000 10.80000 O087700400156 4925.00000 11.10000 O087700400157 4930.00000 11.40000 O087700400158 4935.00000 11.80000 O087700400159 4940.00000 12.40000 O087700400160 4945.00000 14.60000 O087700400161 4950.00000 17.20000 O087700400162 4953.00000 20.60000 O087700400163 4955.00000 19.40000 O087700400164 4957.00000 13.70000 O087700400165 4960.00000 9.56000 O087700400166 4970.00000 8.95000 O087700400167 4972.00000 9.05000 O087700400168 4975.00000 9.68000 O087700400169 4980.00000 10.20000 O087700400170 4990.00000 10.40000 O087700400171 5000.00000 9.22000 O087700400172 5025.00000 9.54000 O087700400173 5050.00000 12.10000 O087700400174 5075.00000 12.70000 O087700400175 5100.00000 15.80000 O087700400176 5125.00000 28.20000 O087700400177 5150.00000 11.90000 O087700400178 5175.00000 9.05000 O087700400179 5200.00000 9.06000 O087700400180 5225.00000 9.47000 O087700400181 5250.00000 9.45000 O087700400182 5275.00000 9.44000 O087700400183 5300.00000 9.50000 O087700400184 5325.00000 11.40000 O087700400185 5350.00000 14.80000 O087700400186 5375.00000 4.38000 O087700400187 5400.00000 7.07000 O087700400188 5425.00000 7.57000 O087700400189 5450.00000 5.50000 O087700400190 5475.00000 11.10000 O087700400191 5500.00000 9.99000 O087700400192 5525.00000 9.30000 O087700400193 5550.00000 9.56000 O087700400194 5575.00000 9.56000 O087700400195 5600.00000 10.10000 O087700400196 5625.00000 10.10000 O087700400197 5650.00000 10.60000 O087700400198 5675.00000 10.20000 O087700400199 5700.00000 9.13000 O087700400200 5725.00000 10.30000 O087700400201 5750.00000 10.10000 O087700400202 5775.00000 10.10000 O087700400203 5800.00000 10.20000 O087700400204 5825.00000 9.56000 O087700400205 5850.00000 9.79000 O087700400206 5875.00000 9.03000 O087700400207 5900.00000 6.89000 O087700400208 5925.00000 2.92000 O087700400209 5950.00000 12.60000 O087700400210 5975.00000 13.60000 O087700400211 6000.00000 13.40000 O087700400212 6025.00000 13.50000 O087700400213 6050.00000 13.80000 O087700400214 6075.00000 14.50000 O087700400215 6100.00000 15.10000 O087700400216 6125.00000 15.10000 O087700400217 6150.00000 16.40000 O087700400218 6175.00000 15.30000 O087700400219 6200.00000 16.70000 O087700400220 6225.00000 15.80000 O087700400221 6250.00000 17.70000 O087700400222 6275.00000 18.50000 O087700400223 6300.00000 19.20000 O087700400224 6325.00000 20.70000 O087700400225 6350.00000 22.00000 O087700400226 6375.00000 24.30000 O087700400227 6400.00000 26.50000 O087700400228 6425.00000 29.80000 O087700400229 6450.00000 32.30000 O087700400230 6475.00000 39.40000 O087700400231 6500.00000 47.60000 O087700400232 6525.00000 58.70000 O087700400233 6550.00000 70.80000 O087700400234 6575.00000 81.70000 O087700400235 6600.00000 59.00000 O087700400236 6625.00000 34.00000 O087700400237 6650.00000 11.10000 O087700400238 6675.00000 4.58000 O087700400239 6700.00000 1.68000 O087700400240 6725.00000 1.84000 O087700400241 6750.00000 2.87000 O087700400242 6775.00000 5.72000 O087700400243 6800.00000 13.40000 O087700400244 6825.00000 30.50000 O087700400245 6850.00000 50.70000 O087700400246 6875.00000 97.20000 O087700400247 6900.00000 113.00000 O087700400248 6925.00000 136.00000 O087700400249 6950.00000 139.00000 O087700400250 6975.00000 131.00000 O087700400251 7000.00000 114.00000 O087700400252 7025.00000 88.50000 O087700400253 7050.00000 59.90000 O087700400254 7075.00000 29.70000 O087700400255 7100.00000 22.10000 O087700400256 7125.00000 42.50000 O087700400257 7150.00000 73.10000 O087700400258 7175.00000 92.10000 O087700400259 7200.00000 119.00000 O087700400260 7225.00000 125.00000 O087700400261 7250.00000 14.50000 O087700400262 7275.00000 28.20000 O087700400263 7300.00000 104.00000 O087700400264 7320.00000 120.00000 O087700400265 7360.00000 146.00000 O087700400266 7380.00000 148.00000 O087700400267 7400.00000 149.00000 O087700400268 7420.00000 164.00000 O087700400269 7440.00000 160.00000 O087700400270 7460.00000 159.00000 O087700400271 7480.00000 160.00000 O087700400272 7500.00000 165.00000 O087700400273 7520.00000 172.00000 O087700400274 7540.00000 171.00000 O087700400275 7560.00000 172.00000 O087700400276 7580.00000 192.00000 O087700400277 7600.00000 201.00000 O087700400278 7620.00000 181.00000 O087700400279 7640.00000 44.20000 O087700400280 7660.00000 17.00000 O087700400281 7680.00000 16.10000 O087700400282 7700.00000 22.10000 O087700400283 7720.00000 27.30000 O087700400284 7740.00000 29.70000 O087700400285 7760.00000 27.90000 O087700400286 7780.00000 26.60000 O087700400287 7800.00000 19.20000 O087700400288 7820.00000 12.80000 O087700400289 7840.00000 3.32000 O087700400290 7860.00000 101.00000 O087700400291 7880.00000 99.30000 O087700400292 7900.00000 76.00000 O087700400293 7920.00000 58.60000 O087700400294 7940.00000 52.60000 O087700400295 7960.00000 47.80000 O087700400296 7980.00000 43.40000 O087700400297 8000.00000 42.30000 O087700400298 8020.00000 38.70000 O087700400299 8040.00000 36.70000 O087700400300 8060.00000 34.30000 O087700400301 8080.00000 47.80000 O087700400302 8100.00000 37.20000 O087700400303 8120.00000 49.80000 O087700400304 8140.00000 55.80000 O087700400305 8160.00000 68.30000 O087700400306 8180.00000 73.70000 O087700400307 8200.00000 67.30000 O087700400308 8220.00000 65.00000 O087700400309 8240.00000 53.80000 O087700400310 8260.00000 17.60000 O087700400311 8280.00000 7.83000 O087700400312 8300.00000 15.20000 O087700400313 8320.00000 22.40000 O087700400314 8340.00000 28.60000 O087700400315 8360.00000 33.10000 O087700400316 8380.00000 34.30000 O087700400317 8400.00000 33.80000 O087700400318 8420.00000 34.80000 O087700400319 8440.00000 36.00000 O087700400320 8460.00000 36.40000 O087700400321 8480.00000 35.30000 O087700400322 8500.00000 34.60000 O087700400323 8520.00000 35.10000 O087700400324 8540.00000 35.30000 O087700400325 8560.00000 33.90000 O087700400326 8580.00000 34.90000 O087700400327 8600.00000 34.90000 O087700400328 8620.00000 34.60000 O087700400329 8640.00000 33.20000 O087700400330 8660.00000 32.60000 O087700400331 8680.00000 34.00000 O087700400332 8700.00000 31.60000 O087700400333 8720.00000 33.10000 O087700400334 8740.00000 31.70000 O087700400335 8760.00000 33.10000 O087700400336 8780.00000 31.40000 O087700400337 8800.00000 30.90000 O087700400338 8820.00000 31.40000 O087700400339 8840.00000 31.50000 O087700400340 8860.00000 30.70000 O087700400341 8880.00000 28.70000 O087700400342 8900.00000 25.00000 O087700400343 8920.00000 17.40000 O087700400344 8940.00000 3.27000 O087700400345 8960.00000 2.29000 O087700400346 8980.00000 2.29000 O087700400347 9000.00000 9.53000 O087700400348 ENDDATA 335 0 O087700400349 ENDSUBENT 348 0 O087700499999 ENDENTRY 4 0 O087799999999