Experimental data on
fusion
elastic scattering
evaporation residue

Experimental data on elastic scattering

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4He + 12C,   Elab=139 MeV

S. M. Smith, G. Tibell, A.A. Cowley, D.A. Goldberg, H.G. Pugh, W. Reichart and N.S. Wall,
Nuclear Physics, A207 (1973) 273-288
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Comments
Beam quality: no data
Target: 0.88 mg/cm^2 CH foil
Data obtained: author's graph digitized
The experiment was carried out using a 139 MeV alpha-particle beam from the University of Maryland Cyclotron. The measurements extended over an angular region from 35 ° to 57.5°(1ab) with an incident beam intensity varying from a few nA at the smallest angles to 50 nA for the larger angles. The opening angle of the detector was 0.5°; the total solid angle was 1.4 x 10^(-4) sr. The uncertainty in the absolute cross sections is estimated to be 10% and arises primarily from the uncertainty in the target thickness. 

 
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Θcm (deg)σ/σR (ratio)error (%)+δσ-δσ
5.08 1.7427 10 0.17427 0.17427
5.75 2.4525 10 0.24525 0.24525
7.19 3.3898 10 0.33898 0.33898
8.73 3.5777 10 0.35777 0.35777
9.4 2.6118 10 0.26118 0.26118
10.36 1.5505 10 0.15505 0.15505
11.03 0.8116 10 0.08116 0.08116
12.75 0.7286 10 0.07286 0.07286
14.29 2.3237 10 0.23237 0.23237
15.34 4.0576 10 0.40576 0.40576
17.45 5.9191 10 0.59191 0.59191
18.6 5.5084 10 0.55084 0.55084
19.85 4.3995 10 0.43995 0.43995
20.81 3.61 10 0.361 0.361
22.05 3.3898 10 0.33898 0.33898
23.97 5.0802 10 0.50802 0.50802
26.08 8.1081 10 0.81081 0.81081
28.19 9.1134 10 0.91134 0.91134
30.78 8.3298 10 0.83298 0.83298
32.6 7.0218 10 0.70218 0.70218
35.29 6.7737 10 0.67737 0.67737
38.07 6.9589 10 0.69589 0.69589
40.85 6.1913 10 0.61913 0.61913
41.52 5.1261 10 0.51261 0.51261
44.4 3.2996 10 0.32996 0.32996
47.08 2.3029 10 0.23029 0.23029
49.38 1.5505 10 0.15505 0.15505
52.07 0.8879 10 0.08879 0.08879
54.46 0.6903 10 0.06903 0.06903
57.05 0.3333 10 0.03333 0.03333
59.26 0.2326 10 0.02326 0.02326
61.75 0.1207 10 0.01207 0.01207
64.15 0.124 10 0.0124 0.0124
70.38 0.0857 10 0.00857 0.00857