ENTRY C2587 20210110 C200C258700000001 SUBENT C2587001 20210110 C200C258700100001 BIB 9 23 C258700100002 TITLE Elastic Scattering of Alpha Particles by Helium C258700100003 Between 53 and 120 MeV C258700100004 AUTHOR (P.Darriulat,G.Igo,H.G.Pugh,H.D.Holmgren) C258700100005 REFERENCE (J,PR,137,B315,1965) Main reference. C258700100006 #doi:10.1103/PhysRev.137.B315 C258700100007 (J,PL,11,(4),326,1964) Parameter fitting results. C258700100008 #doi:10.1016/0031-9163(64)90349-X C258700100009 REL-REF (M,C1025001,P.Darriulat+,J,PR,134,B42,1964) The C258700100010 experimental arrangement and procedures. C258700100011 INSTITUTE (1USABRK,1USAMRY) C258700100012 FACILITY (CYCLO,1USABRK) The Berkeley 88-inch variable-energy C258700100013 cyclotron. C258700100014 SAMPLE The entire scattering chamber was filled with helium C258700100015 gas at a pressure of about 10 cm/Hg. The helium was C258700100016 passed continuously through the chamber, the flow C258700100017 rate being monitored by a How gauge and the pressure C258700100018 being controlled by a Cartesian manostat which kept C258700100019 the pressure constant to +-0.2%. C258700100020 DETECTOR (SILI) Three lithium-drifted silicon detectors were C258700100021 used, two mounted on the chamber turrets and one on C258700100022 an arm attached to the target mechanism in the C258700100023 equatorial plane of the chamber. C258700100024 HISTORY (20210110C) BP C258700100025 ENDBIB 23 0 C258700100026 NOCOMMON 0 0 C258700100027 ENDSUBENT 26 0 C258700199999 SUBENT C2587002 20210110 C200C258700200001 BIB 3 5 C258700200002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700200003 ERR-ANALYS (EN-ERR) The uncertainty in the energies does not C258700200004 include any possible errors in the range-energy C258700200005 tables used. C258700200006 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700200007 ENDBIB 5 0 C258700200008 COMMON 2 3 C258700200009 EN EN-ERR C258700200010 MEV MEV C258700200011 53.40 0.15 C258700200012 ENDCOMMON 3 0 C258700200013 DATA 2 43 C258700200014 ANG-CM DATA-CM C258700200015 ADEG MB/SR C258700200016 9.803 1.254E+03 C258700200017 12.028 1.093E+03 C258700200018 13.515 9.687E+02 C258700200019 15.756 7.229E+02 C258700200020 17.988 5.880E+02 C258700200021 19.493 4.312E+02 C258700200022 21.749 2.755E+02 C258700200023 23.632 1.854E+02 C258700200024 25.523 1.144E+02 C258700200025 27.424 6.368E+01 C258700200026 30.062 3.545E+01 C258700200027 31.970 1.841E+01 C258700200028 34.243 9.902E+00 C258700200029 35.746 7.388E+00 C258700200030 37.958 7.392E+00 C258700200031 40.136 1.044E+01 C258700200032 41.939 1.580E+01 C258700200033 44.107 2.475E+01 C258700200034 45.923 3.263E+01 C258700200035 47.734 4.530E+01 C258700200036 49.185 5.769E+01 C258700200037 52.117 6.860E+01 C258700200038 53.953 7.352E+01 C258700200039 55.790 7.881E+01 C258700200040 57.631 8.021E+01 C258700200041 59.850 7.490E+01 C258700200042 62.082 6.093E+01 C258700200043 62.461 5.494E+01 C258700200044 63.209 4.955E+01 C258700200045 64.692 4.547E+01 C258700200046 66.579 2.905E+01 C258700200047 66.600 2.362E+01 C258700200048 68.479 1.645E+01 C258700200049 70.368 1.033E+01 C258700200050 72.230 8.548E+00 C258700200051 74.406 1.228E+01 C258700200052 76.570 1.992E+01 C258700200053 78.359 3.461E+01 C258700200054 80.160 5.328E+01 C258700200055 81.973 7.271E+01 C258700200056 83.794 9.101E+01 C258700200057 88.194 1.160E+02 C258700200058 89.664 1.222E+02 C258700200059 ENDDATA 45 0 C258700200060 ENDSUBENT 59 0 C258700299999 SUBENT C2587003 20210110 C200C258700300001 BIB 3 5 C258700300002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700300003 ERR-ANALYS (EN-ERR) The uncertainty in the energies does not C258700300004 include any possible errors in the range-energy C258700300005 tables used. C258700300006 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700300007 ENDBIB 5 0 C258700300008 COMMON 2 3 C258700300009 EN EN-ERR C258700300010 MEV MEV C258700300011 58.49 0.16 C258700300012 ENDCOMMON 3 0 C258700300013 DATA 2 41 C258700300014 ANG-CM DATA-CM C258700300015 ADEG MB/SR C258700300016 10.000 1.649E+03 C258700300017 11.488 1.318E+03 C258700300018 13.721 1.109E+03 C258700300019 15.953 7.991E+02 C258700300020 18.186 5.660E+02 C258700300021 19.674 3.614E+02 C258700300022 21.535 2.389E+02 C258700300023 23.767 1.178E+02 C258700300024 25.628 5.709E+01 C258700300025 27.488 2.673E+01 C258700300026 29.349 1.861E+01 C258700300027 31.953 2.136E+01 C258700300028 33.442 2.964E+01 C258700300029 35.302 3.522E+01 C258700300030 37.163 4.185E+01 C258700300031 39.395 4.332E+01 C258700300032 41.256 4.407E+01 C258700300033 43.488 4.332E+01 C258700300034 46.093 4.722E+01 C258700300035 47.953 5.237E+01 C258700300036 49.814 6.117E+01 C258700300037 51.674 7.022E+01 C258700300038 54.279 8.060E+01 C258700300039 55.767 8.786E+01 C258700300040 58.000 9.253E+01 C258700300041 60.233 8.939E+01 C258700300042 62.465 8.343E+01 C258700300043 64.698 7.787E+01 C258700300044 65.814 5.709E+01 C258700300045 67.674 3.974E+01 C258700300046 69.535 2.767E+01 C258700300047 71.767 1.861E+01 C258700300048 73.256 1.412E+01 C258700300049 75.488 1.566E+01 C258700300050 77.349 2.288E+01 C258700300051 79.209 3.462E+01 C258700300052 81.442 5.060E+01 C258700300053 83.674 6.668E+01 C258700300054 85.163 8.201E+01 C258700300055 87.395 9.578E+01 C258700300056 90.372 1.009E+02 C258700300057 ENDDATA 43 0 C258700300058 ENDSUBENT 57 0 C258700399999 SUBENT C2587004 20210110 C200C258700400001 BIB 3 5 C258700400002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700400003 ERR-ANALYS (EN-ERR) The uncertainty in the energies does not C258700400004 include any possible errors in the range-energy C258700400005 tables used. C258700400006 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700400007 ENDBIB 5 0 C258700400008 COMMON 2 3 C258700400009 EN EN-ERR C258700400010 MEV MEV C258700400011 63.91 0.18 C258700400012 ENDCOMMON 3 0 C258700400013 DATA 2 36 C258700400014 ANG-CM DATA-CM C258700400015 ADEG MB/SR C258700400016 10.369 1.534E+03 C258700400017 11.475 1.271E+03 C258700400018 16.267 7.223E+02 C258700400019 17.742 4.708E+02 C258700400020 19.585 2.866E+02 C258700400021 22.166 1.373E+02 C258700400022 24.009 6.353E+01 C258700400023 25.853 1.950E+01 C258700400024 28.065 1.249E+01 C258700400025 32.120 4.071E+01 C258700400026 35.069 7.539E+01 C258700400027 37.281 8.213E+01 C258700400028 39.493 8.213E+01 C258700400029 43.180 7.162E+01 C258700400030 45.392 6.353E+01 C258700400031 47.235 5.446E+01 C258700400032 50.184 5.733E+01 C258700400033 52.028 5.540E+01 C258700400034 55.346 6.463E+01 C258700400035 57.558 7.040E+01 C258700400036 59.770 7.411E+01 C258700400037 62.350 6.921E+01 C258700400038 63.456 6.463E+01 C258700400039 66.037 5.446E+01 C258700400040 67.143 4.831E+01 C258700400041 68.249 4.359E+01 C258700400042 70.461 3.258E+01 C258700400043 70.829 2.890E+01 C258700400044 73.779 1.534E+01 C258700400045 75.991 1.293E+01 C258700400046 78.203 1.615E+01 C258700400047 81.889 3.095E+01 C258700400048 83.733 4.002E+01 C258700400049 85.576 4.914E+01 C258700400050 88.157 5.832E+01 C258700400051 90.737 5.832E+01 C258700400052 ENDDATA 38 0 C258700400053 ENDSUBENT 52 0 C258700499999 SUBENT C2587005 20210110 C200C258700500001 BIB 3 5 C258700500002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700500003 ERR-ANALYS (EN-ERR) The uncertainty in the energies does not C258700500004 include any possible errors in the range-energy C258700500005 tables used. C258700500006 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700500007 ENDBIB 5 0 C258700500008 COMMON 2 3 C258700500009 EN EN-ERR C258700500010 MEV MEV C258700500011 69.91 0.20 C258700500012 ENDCOMMON 3 0 C258700500013 DATA 2 30 C258700500014 ANG-CM DATA-CM C258700500015 ADEG MB/SR C258700500016 19.585 2.542E+02 C258700500017 21.797 1.137E+02 C258700500018 23.271 4.285E+01 C258700500019 25.852 1.338E+01 C258700500020 27.695 1.729E+01 C258700500021 29.538 3.867E+01 C258700500022 32.119 6.463E+01 C258700500023 33.593 8.646E+01 C258700500024 35.805 1.026E+02 C258700500025 40.229 1.044E+02 C258700500026 43.178 8.213E+01 C258700500027 47.602 6.035E+01 C258700500028 49.077 5.173E+01 C258700500029 51.289 4.589E+01 C258700500030 54.975 4.999E+01 C258700500031 56.818 5.446E+01 C258700500032 59.767 5.446E+01 C258700500033 63.454 5.353E+01 C258700500034 67.878 3.867E+01 C258700500035 70.827 2.841E+01 C258700500036 71.933 2.161E+01 C258700500037 74.145 1.384E+01 C258700500038 75.251 1.053E+01 C258700500039 77.831 1.017E+01 C258700500040 80.412 1.127E+01 C258700500041 81.518 1.643E+01 C258700500042 83.361 2.052E+01 C258700500043 86.310 2.436E+01 C258700500044 88.522 2.841E+01 C258700500045 94.052 2.890E+01 C258700500046 ENDDATA 32 0 C258700500047 ENDSUBENT 46 0 C258700599999 SUBENT C2587006 20210110 C200C258700600001 BIB 3 5 C258700600002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700600003 ERR-ANALYS (EN-ERR) The uncertainty in the energies does not C258700600004 include any possible errors in the range-energy C258700600005 tables used. C258700600006 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700600007 ENDBIB 5 0 C258700600008 COMMON 2 3 C258700600009 EN EN-ERR C258700600010 MEV MEV C258700600011 77.55 0.22 C258700600012 ENDCOMMON 3 0 C258700600013 DATA 2 42 C258700600014 ANG-CM DATA-CM C258700600015 ADEG MB/SR C258700600016 9.631 1.674E+03 C258700600017 11.843 1.229E+03 C258700600018 13.318 9.662E+02 C258700600019 15.899 6.075E+02 C258700600020 18.479 3.954E+02 C258700600021 19.585 2.058E+02 C258700600022 21.060 9.829E+01 C258700600023 23.641 3.628E+01 C258700600024 28.065 3.273E+01 C258700600025 29.171 5.870E+01 C258700600026 31.014 8.421E+01 C258700600027 33.594 1.090E+02 C258700600028 35.438 1.250E+02 C258700600029 37.650 1.272E+02 C258700600030 39.862 1.208E+02 C258700600031 41.705 1.128E+02 C258700600032 43.180 9.336E+01 C258700600033 46.129 7.214E+01 C258700600034 47.235 5.972E+01 C258700600035 49.447 4.859E+01 C258700600036 51.659 4.022E+01 C258700600037 53.502 3.566E+01 C258700600038 55.714 3.691E+01 C258700600039 57.558 3.691E+01 C258700600040 59.032 3.886E+01 C258700600041 60.507 3.886E+01 C258700600042 63.088 3.886E+01 C258700600043 65.668 3.506E+01 C258700600044 67.512 3.003E+01 C258700600045 69.355 2.486E+01 C258700600046 71.198 1.955E+01 C258700600047 71.935 1.646E+01 C258700600048 73.410 1.167E+01 C258700600049 75.622 7.998E+00 C258700600050 77.097 5.972E+00 C258700600051 78.571 4.943E+00 C258700600052 80.783 5.575E+00 C258700600053 83.364 6.971E+00 C258700600054 83.733 8.278E+00 C258700600055 85.207 9.497E+00 C258700600056 87.051 1.017E+01 C258700600057 89.263 1.090E+01 C258700600058 ENDDATA 44 0 C258700600059 ENDSUBENT 58 0 C258700699999 SUBENT C2587007 20210110 C200C258700700001 BIB 3 8 C258700700002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700700003 ERR-ANALYS (DATA-ERR) The uncertainties listed for the C258700700004 individual points include counting statistics and C258700700005 analysis uncertainties. C258700700006 (EN-ERR) The uncertainty in the energies does not C258700700007 include any possible errors in the range-energy C258700700008 tables used. C258700700009 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700700010 ENDBIB 8 0 C258700700011 COMMON 2 3 C258700700012 EN EN-ERR C258700700013 MEV MEV C258700700014 99.60 0.28 C258700700015 ENDCOMMON 3 0 C258700700016 DATA 3 39 C258700700017 ANG-CM DATA-CM DATA-ERR C258700700018 ADEG MB/SR MB/SR C258700700019 10.944 1.733E+03 C258700700020 13.476 1.337E+03 C258700700021 15.257 8.390E+02 C258700700022 16.318 5.839E+02 C258700700023 18.812 3.030E+02 C258700700024 20.947 1.685E+02 C258700700025 22.712 8.897E+01 C258700700026 23.781 6.750E+01 C258700700027 26.713 7.481E+01 C258700700028 28.568 1.003E+02 C258700700029 30.778 1.212E+02 C258700700030 31.517 1.320E+02 C258700700031 34.808 1.366E+02 C258700700032 36.261 1.253E+02 C258700700033 38.814 1.209E+02 C258700700034 43.515 7.327E+01 C258700700035 45.675 5.277E+01 C258700700036 48.572 4.071E+01 C258700700037 51.093 2.784E+01 C258700700038 54.348 2.005E+01 C258700700039 56.530 1.807E+01 C258700700040 59.429 1.418E+01 C258700700041 62.341 1.278E+01 C258700700042 64.160 1.172E+01 1.151E+00 C258700700043 65.983 1.132E+01 1.626E+00 C258700700044 68.511 8.438E+00 C258700700045 71.384 5.026E+00 C258700700046 73.167 3.209E+00 3.157E-01 C258700700047 75.330 2.392E+00 1.976E-01 C258700700048 77.435 9.751E-01 1.403E-01 C258700700049 78.491 6.444E-01 1.470E-01 C258700700050 79.547 4.259E-01 1.028E-01 C258700700051 80.247 3.122E-01 5.401E-02 C258700700052 80.919 1.707E-01 4.339E-02 C258700700053 82.751 1.797E-01 4.568E-02 C258700700054 84.662 4.328E-01 1.100E-01 C258700700055 86.157 6.109E-01 1.629E-01 C258700700056 87.997 7.010E-01 1.408E-01 C258700700057 89.116 8.923E-01 1.793E-01 C258700700058 ENDDATA 41 0 C258700700059 ENDSUBENT 58 0 C258700799999 SUBENT C2587008 20210110 C200C258700800001 BIB 3 8 C258700800002 REACTION (2-HE-4(A,EL)2-HE-4,,DA) C258700800003 ERR-ANALYS (DATA-ERR) The uncertainties listed for the C258700800004 individual points include counting statistics and C258700800005 analysis uncertainties. C258700800006 (EN-ERR) The uncertainty in the energies does not C258700800007 include any possible errors in the range-energy C258700800008 tables used. C258700800009 STATUS (CURVE) Fig. 2, page B319 of Phys.Rev.,137,B315,1965. C258700800010 ENDBIB 8 0 C258700800011 COMMON 2 3 C258700800012 EN EN-ERR C258700800013 MEV MEV C258700800014 119.86 0.34 C258700800015 ENDCOMMON 3 0 C258700800016 DATA 3 24 C258700800017 ANG-CM DATA-CM DATA-ERR C258700800018 ADEG MB/SR MB/SR C258700800019 10.387 1.922E+03 C258700800020 12.554 1.337E+03 C258700800021 15.449 8.834E+02 C258700800022 18.642 2.877E+02 C258700800023 20.783 1.546E+02 C258700800024 22.581 1.057E+02 C258700800025 24.403 9.206E+01 C258700800026 26.633 1.234E+02 C258700800027 28.469 1.255E+02 C258700800028 30.680 1.367E+02 C258700800029 32.870 1.211E+02 C258700800030 35.065 1.130E+02 C258700800031 37.965 7.859E+01 C258700800032 42.685 4.680E+01 C258700800033 48.836 1.906E+01 C258700800034 54.649 1.041E+01 C258700800035 58.603 4.467E+00 C258700800036 63.690 2.659E+00 2.203E-01 C258700800037 68.403 1.478E+00 1.220E-01 C258700800038 74.190 6.231E-01 1.076E-01 C258700800039 80.924 5.374E-02 1.882E-02 C258700800040 85.847 2.579E-01 4.818E-02 C258700800041 87.357 3.968E-01 9.572E-02 C258700800042 89.214 4.964E-01 7.873E-02 C258700800043 ENDDATA 26 0 C258700800044 ENDSUBENT 43 0 C258700899999 SUBENT C2587009 20210110 C200C258700900001 BIB 5 24 C258700900002 REACTION (2-HE-4(A,NON),,SIG,,,DERIV) C258700900003 ANALYSIS The total cross sections were calculated from phase C258700900004 shifts. Phase shifts were obtained from differential C258700900005 cross sections fits. C258700900006 ERR-ANALYS (DATA-ERR,1.,2.) Uncertainty in the absolute cross C258700900007 section is also 1 or 2%. The uncertainties in the C258700900008 absolute cross sections include geometrical C258700900009 uncertainties, uncertainty in the density of helium C258700900010 due to the presence of contaminants, an allowance for C258700900011 fluctuations of gas pressure and temperature and C258700900012 uncertainty in the calibration of the Faraday cup, C258700900013 and an allowance of about 0.5% for the fact that the C258700900014 rms fluctuation of the monitor counting rate after C258700900015 applying all corrections was somewhat larger than C258700900016 expected. C258700900017 FLAG (1.) Different xi**2/N values. C258700900018 STATUS (DEP,C2587002) C258700900019 (DEP,C2587003) C258700900020 (DEP,C2587004) C258700900021 (DEP,C2587005) C258700900022 (DEP,C2587006) C258700900023 (DEP,C2587007) C258700900024 (DEP,C2587008) C258700900025 (TABLE) Table II, page B321 of Phys.Rev.,137,B315,1965.C258700900026 ENDBIB 24 0 C258700900027 NOCOMMON 0 0 C258700900028 DATA 3 10 C258700900029 EN DATA FLAG C258700900030 MEV MB NO-DIM C258700900031 53.40 649.9 C258700900032 58.49 687.9 C258700900033 63.91 800.2 C258700900034 69.91 859.3 C258700900035 77.55 848.1 1. C258700900036 77.55 879.0 1. C258700900037 99.60 791.5 1. C258700900038 99.60 820.7 1. C258700900039 99.60 833.3 1. C258700900040 119.86 823.9 C258700900041 ENDDATA 12 0 C258700900042 ENDSUBENT 41 0 C258700999999 ENDENTRY 9 0 C258799999999