Elastic scattering of 8He+4He and two-neutron transfer and the influence of resonances in 12Be
SPIRAL facility
A high-purity 4He gas target was used in the ECLAN reaction chamber at pressures of 1000-1400 mbar.
A silicon monitor detector (2 cm dia.) was placed between the two lampshade detector arrays to measure integrated number of beam particles.
Two arrays of segmented silicon detectors (YY1 type, 500 um thick) were used. Each array consisted of six detectors in a lampshade configuration. The two arrays, Lamp1 and Lamp2, were placed at distances of 15 cm and 25.5 cm from the entrance window. The detectors were inclined at 46 degree to the beam axis and covered angular ranges of 13-39 degree (Lamp1) and 7.5-21 degree (Lamp2).
| Heading | Lower limit (%) | Upper limit (%) | Correlation | Remark |
|---|---|---|---|---|
ERR-S
|
Statistical uncertainty |
| Date | Work | Remark |
|---|---|---|
| 2025-11-22 | Data received at the data center | Data received from M.Freer (2025-11-22) |
| 2025-11-26 | Compiled at the data center | VT |
Fig.5
------------------------------------------------------------
E-EXC-CMP E-EXC-CMP ANG-CM DATA ERR-S
MEV MEV ADEG MB/SR MB/SR
------------------------------------------------------------
14.3 15.0 62. 110.9066746 2.758906647
14.3 15.0 63. 98.90648918 2.386234973
14.3 15.0 64. 83.86619605 2.061521868
14.3 15.0 65. 69.46554952 1.786461166
14.3 15.0 66. 56.77424046 1.542914998
14.3 15.0 67. 45.85928515 1.331073144
14.3 15.0 68. 37.16117781 1.16930763
14.3 15.0 69. 29.13210156 1.012410515
14.3 15.0 70. 21.24567339 0.847794664
14.3 15.0 71. 15.83373684 0.72120695
14.3 15.0 72. 11.65757433 0.610185328
14.3 15.0 73. 8.783664459 0.52871447
14.3 15.0 74. 7.711644561 0.493687454
14.3 15.0 75. 6.050908073 0.427863813
14.3 15.0 76. 7.605756205 0.473513698
14.3 15.0 77. 7.692385428 0.473433596
14.3 15.0 78. 9.946964064 0.533213243
14.3 15.0 79. 12.95343436 0.603301585
14.3 15.0 80. 17.31634382 0.683954459
14.3 15.0 81. 18.75129721 0.706214709
14.3 15.0 82. 23.88259106 0.782720308
14.3 15.0 83. 26.20693697 0.814996971
14.3 15.0 84. 30.54316096 0.860114834
14.3 15.0 85. 34.97507096 0.909748582
14.3 15.0 86. 38.65974594 0.955800704
14.3 15.0 87. 42.1765997 0.992734147
14.3 15.0 88. 41.6082067 0.967109811
14.3 15.0 89. 45.36653348 1.001734809
14.3 15.0 90. 47.20730873 1.016917228
14.3 15.0 91. 49.87148756 1.040571255
14.3 15.0 92. 48.86015984 1.009412641
14.3 15.0 93. 49.04522735 1.015187651
14.3 15.0 94. 46.40628724 0.978113102
14.3 15.0 95. 46.91408742 0.974631079
14.3 15.0 96. 43.76095608 0.929822255
14.3 15.0 97. 46.414827 0.957872466
14.3 15.0 98. 42.89393349 0.915125897
14.3 15.0 99. 40.47602191 0.887069117
14.3 15.0 100. 39.27254957 0.868657654
14.3 15.0 101. 37.06837818 0.838788492
14.3 15.0 102. 33.23463973 0.787073524
14.3 15.0 103. 30.49878038 0.753803471
14.3 15.0 104. 31.02224888 0.75822055
14.3 15.0 105. 27.61486852 0.711591077
14.3 15.0 106. 26.13965856 0.690761941
14.3 15.0 107. 22.09330131 0.627660737
14.3 15.0 108. 20.78315632 0.611269304
14.3 15.0 109. 19.51114483 0.588283151
14.3 15.0 110. 19.9334249 0.601288749
14.3 15.0 111. 17.99543533 0.572221553
14.3 15.0 112. 18.93812932 0.597682062
14.3 15.0 113. 19.97904491 0.63433531
14.3 15.0 114. 22.009485 0.692546907
14.3 15.0 115. 23.03955176 0.749080441
14.3 15.0 116. 20.92530995 0.749246285
15.9 16.4 60. 35.07746881 2.278526448
15.9 16.4 61. 28.61167002 1.858527684
15.9 16.4 62. 23.21109921 1.582983828
15.9 16.4 63. 20.92331726 1.430288523
15.9 16.4 64. 14.47702996 1.155392774
15.9 16.4 65. 12.93682243 1.081831439
15.9 16.4 66. 11.8549674 1.031842469
15.9 16.4 67. 11.05401393 1.009088797
15.9 16.4 68. 7.49777313 0.83827652
15.9 16.4 69. 6.989789455 0.801783839
15.9 16.4 70. 4.212358573 0.621078388
15.9 16.4 71. 4.238178634 0.611728394
15.9 16.4 72. 4.521291596 0.621047163
15.9 16.4 73. 3.086631088 0.500717682
15.9 16.4 74. 2.190116035 0.413893026
15.9 16.4 75. 1.947565543 0.381949027
15.9 16.4 76. 1.653742164 0.344829078
15.9 16.4 77. 2.260146035 0.393440924
15.9 16.4 78. 1.71154997 0.335662565
15.9 16.4 79. 2.3690651 0.384313107
15.9 16.4 80. 2.323829221 0.372110483
15.9 16.4 81. 2.589712492 0.386051545
15.9 16.4 82. 2.768506057 0.387668389
15.9 16.4 83. 3.190266252 0.408471737
15.9 16.4 84. 3.288043478 0.404730174
15.9 16.4 85. 3.344549934 0.402636497
15.9 16.4 86. 4.997253007 0.478650028
15.9 16.4 87. 4.276519755 0.438761669
15.9 16.4 88. 5.131848515 0.472424949
15.9 16.4 89. 5.896285374 0.496556805
15.9 16.4 90. 5.709759509 0.482562754
15.9 16.4 91. 6.041148861 0.488397938
15.9 16.4 92. 6.100199559 0.48226312
15.9 16.4 93. 5.953090673 0.4721108
15.9 16.4 94. 5.86706921 0.465288854
15.9 16.4 95. 6.73344463 0.495052695
15.9 16.4 96. 6.873497924 0.49222141
15.9 16.4 97. 6.930972319 0.493811331
15.9 16.4 98. 7.540245802 0.513048743
15.9 16.4 99. 7.409867173 0.507715733
15.9 16.4 100. 7.873624727 0.521443536
15.9 16.4 101. 6.965318743 0.490078117
15.9 16.4 102. 7.163570002 0.499109572
15.9 16.4 103. 7.506758872 0.508421865
15.9 16.4 104. 7.610712659 0.511951935
15.9 16.4 105. 8.036699313 0.523144566
15.9 16.4 106. 7.226007234 0.495117857
15.9 16.4 107. 7.183231343 0.494514039
15.9 16.4 108. 7.310564739 0.497420926
15.9 16.4 109. 7.245508982 0.492994443
15.9 16.4 110. 6.487756343 0.46579376
15.9 16.4 111. 6.726729243 0.476845193
15.9 16.4 112. 6.806303441 0.482486059
15.9 16.4 113. 6.133764945 0.45974512
15.9 16.4 114. 5.829999468 0.452495715
15.9 16.4 115. 5.182344485 0.430370285
15.9 16.4 116. 5.983935126 0.471600154
15.9 16.4 117. 5.214259502 0.445484253
15.9 16.4 118. 4.580995599 0.418185771
15.9 16.4 119. 4.069832626 0.397174996
15.9 16.4 120. 3.921344229 0.390188334
15.9 16.4 121. 3.852222663 0.387162945
15.9 16.4 122. 3.362908963 0.366923449
15.9 16.4 123. 2.740610527 0.334818865
15.9 16.4 124. 3.19452267 0.368871705
15.9 16.4 125. 2.861682865 0.357710358
15.9 16.4 126. 2.759904898 0.359309013
15.9 16.4 127. 2.481253888 0.35090229
15.9 16.4 128. 3.12564403 0.400197709
15.9 16.4 129. 3.085264616 0.405115091
15.9 16.4 130. 2.811098807 0.397549406
15.9 16.4 131. 3.956959755 0.502534391
15.9 16.4 132. 4.385763725 0.570977803
15.9 16.4 133. 6.158332118 0.769791515
------------------------------------------------------------
Fig.6
------------------------------------------------
E-EXC-CMP ANG-CM DATA ERR-S
MEV ADEG MB/SR MB/SR
------------------------------------------------
14.4 63. 5.145831612 1.212884143
14.4 64. 2.237711986 0.745903995
14.4 65. 5.48871263 1.076425108
14.4 66. 4.481195517 0.878834746
14.4 67. 5.334523471 0.865373979
14.4 68. 6.675479653 0.908417719
14.4 69. 4.96363515 0.756947264
14.4 70. 5.931120461 0.79975212
14.4 71. 5.530823984 0.759717101
14.4 72. 7.307286167 0.861171933
14.4 73. 5.036237378 0.726918251
14.4 74. 5.970935513 0.790869729
14.4 75. 6.559790337 0.795491425
14.4 76. 6.25543053 0.764222472
14.4 77. 7.14377389 0.830446846
14.4 78. 6.605679739 0.778486823
14.4 79. 8.71400753 0.884773413
14.4 80. 8.394552854 0.870474581
14.4 81. 7.764889808 0.823076673
14.4 82. 8.364365806 0.86271846
14.4 83. 9.130878582 0.886869328
14.4 84. 10.22182164 0.940994955
14.4 85. 10.08866901 0.913385175
14.4 86. 11.35877568 0.974006979
14.4 87. 12.00871272 0.99726931
14.4 88. 12.31977368 1.019591724
14.4 89. 12.32348628 0.996294816
14.4 90. 13.78289942 1.063373776
14.4 91. 14.9676155 1.112534098
14.4 92. 13.25384855 1.047808729
14.4 93. 12.46038606 1.017386261
14.4 94. 12.23232323 1.008905016
14.4 95. 11.27175967 0.984818215
14.4 96. 13.32148675 1.066572539
14.4 97. 10.77313245 0.967455854
14.4 98. 10.32351926 0.938501751
14.4 99. 11.37438361 0.997599436
14.4 100. 10.85989987 0.987263625
14.4 101. 10.11590268 0.955862957
14.4 102. 9.321170414 0.927491122
14.4 103. 8.682926829 0.920388403
14.4 104. 6.811967945 0.808431861
14.4 105. 9.7257153 0.997837336
14.4 106. 7.468326712 0.899080882
14.4 107. 7.069114126 0.883639266
14.4 108. 7.898759305 0.950898877
14.4 109. 8.780259775 1.00716487
14.4 110. 6.111620639 0.847529292
14.4 111. 6.221651376 0.888807339
14.4 112. 4.519183673 0.798886355
14.4 113. 3.329057088 0.726459814
14.4 114. 3.817299206 0.853574051
15.7 55. 0.923194303 0.923194303
15.7 56. 0.749380677 0.749380677
15.7 57. 3.336397059 1.492082125
15.7 58. 1.087966432 0.769308442
15.7 59. 1.444584466 0.834031231
15.7 60. 1.686019508 0.843009754
15.7 61. 0.378617992 0.378617992
15.7 62. 0.700434153 0.49528174
15.7 63. 1.213083253 0.606541627
15.7 64. 1.143442139 0.571721069
15.7 65. 2.759721747 0.872700643
15.7 66. 1.022067364 0.511033682
15.7 67. 1.210121012 0.541182569
15.7 68. 1.404934688 0.573562185
15.7 69. 1.118506193 0.500211176
15.7 70. 1.080453612 0.483193545
15.7 71. 0.980630521 0.438551301
15.7 72. 1.000330688 0.447361484
15.7 73. 1.290961744 0.487937675
15.7 74. 0.181191974 0.181191974
15.7 75. 0.502387378 0.290053488
15.7 76. 0.16914797 0.16914797
15.7 78. 0.152748848 0.152748848
15.7 79. 0.607772964 0.303886482
15.7 81. 0.143970492 0.143970492
15.7 82. 0.56292161 0.281460805
15.7 84. 0.400735971 0.23136502
15.7 85. 0.130343453 0.130343453
15.7 86. 0.128529698 0.128529698
15.7 87. 0.371311182 0.214376611
15.7 88. 0.240107155 0.169781398
15.7 89. 0.608437673 0.272101599
15.7 91. 0.359103725 0.207328632
15.7 92. 0.124755129 0.124755129
15.7 93. 0.128531974 0.128531974
15.7 95. 0.131336155 0.131336155
15.7 96. 0.268173759 0.189627483
15.7 98. 0.13815151 0.13815151
15.7 99. 0.426431718 0.246200467
15.7 100. 0.145423953 0.145423953
15.7 102. 0.311815488 0.220486846
15.7 103. 0.321253153 0.227160283
15.7 104. 0.328246863 0.232105583
15.7 105. 1.528099348 0.509366449
15.7 106. 0.680157392 0.340078696
15.7 107. 1.680555556 0.560185185
15.7 108. 1.548015672 0.54730619
15.7 109. 1.010354041 0.451844064
15.7 110. 1.902958993 0.634319664
15.7 111. 3.039222 0.84292852
15.7 112. 3.821320794 0.986660786
15.7 113. 1.387720774 0.620607597
15.7 114. 3.713262777 1.029873795
15.7 115. 3.030556019 0.95834596
15.7 116. 3.359711231 1.062433977
15.7 117. 8.425531915 1.7198545
15.7 118. 3.681541582 1.16420567
15.7 119. 4.879305517 1.408534177
15.7 120. 4.42251462 1.398521918
15.7 121. 5.107281041 1.615064074
15.7 122. 3.698420785 1.509873963
15.7 123. 5.084033613 1.921584085
16.0 58. 2.070517629 0.574258268
16.0 59. 2.092834317 0.559333499
16.0 60. 2.255708229 0.563927057
16.0 61. 2.258592471 0.547789137
16.0 62. 2.670771938 0.56941049
16.0 63. 2.483665245 0.517880003
16.0 64. 2.373616512 0.494933256
16.0 65. 1.529880478 0.38247012
16.0 66. 1.828844051 0.408941962
16.0 67. 2.320677835 0.455122368
16.0 68. 1.943483452 0.405244313
16.0 69. 1.813186813 0.386572727
16.0 70. 1.579128047 0.353103766
16.0 71. 1.116775916 0.288350302
16.0 72. 1.399984783 0.313046114
16.0 73. 0.983131059 0.262752828
16.0 74. 1.01567675 0.262246609
16.0 75. 0.762852405 0.220216521
16.0 76. 0.248816768 0.124408384
16.0 77. 0.243048676 0.121524338
16.0 78. 0.178121975 0.10283877
16.0 79. 0.358395014 0.146314152
16.0 80. 0.281242358 0.125775406
16.0 81. 0.106815279 0.075529808
16.0 82. 0.053491482 0.053491482
16.0 83. 0.052305418 0.052305418
16.0 84. 0.103656132 0.073295954
16.0 85. 0.049914097 0.049914097
16.0 86. 0.048836592 0.048836592
16.0 87. 0.144654088 0.083516077
16.0 88. 0.047561606 0.047561606
16.0 89. 0.194609459 0.09730473
16.0 90. 0.140682343 0.081222989
16.0 91. 0.191039817 0.095519909
16.0 92. 0.09584831 0.06777499
16.0 93. 0.048731395 0.048731395
16.0 94. 0.048530886 0.048530886
16.0 95. 0.102787554 0.072681776
16.0 96. 0.257919821 0.11534525
16.0 97. 0.10505881 0.074287797
16.0 98. 0.109582514 0.077486539
16.0 99. 0.111010558 0.078496318
16.0 100. 0.168344007 0.097193458
16.0 101. 0.236808237 0.118404118
16.0 102. 0.235038641 0.11751932
16.0 103. 0.420338098 0.158872868
16.0 104. 0.574282147 0.191427382
16.0 105. 1.08906065 0.264136006
16.0 106. 1.486704863 0.316966542
16.0 107. 1.552742616 0.331045838
16.0 108. 0.977980258 0.261376218
16.0 109. 2.183484737 0.405462937
16.0 110. 2.509946573 0.44370006
16.0 111. 2.004823198 0.40096464
16.0 112. 3.320101047 0.524954068
16.0 113. 2.308063427 0.452648479
16.0 114. 3.163708361 0.550730936
16.0 115. 3.43685144 0.598279042
16.0 116. 3.715882665 0.646852144
16.0 117. 2.788246146 0.581389511
16.0 118. 3.03510161 0.607020322
16.0 119. 3.235796981 0.660504293
16.0 120. 2.533530522 0.597158871
16.0 121. 1.515234697 0.479159283
16.0 122. 2.217885432 0.592754815
------------------------------------------------