A study of the Be9(p, α)Li6 reaction from 3.5 to 12.5 MeV

Blieden, H.R.; Temmer, G. M.; Warsh, K. L.

doi:10.1016/0029-5582(63)90087-7

Cited by 32 publications

(6 citation statements)

References 15 publications

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“…≈ 85 • . However, relatively small adjustments to the depths of the real and imaginary parts of the entrance [21] while the maroon stars denote the 7 MeV (p, d ) data of Yanuba et al [25]. The full curves denote the results of the CRC calculations described in the text.…”

Section: Coupled Reaction Channels Calculationsmentioning

confidence: 99%

“…The relatively good description of the (p, d ) data-comparable to those at the higher incident energiessuggests that this particular reaction is still dominated at least at forward angles by the direct reaction component. [21] renormalized by a factor of 0.75 while the filled blue squares denote the 6.1 MeV data of Ishiwari [22]. The full curves denote the results of the CRC calculations described in the text.…”

Section: Coupled Reaction Channels Calculationsmentioning

confidence: 99%

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Coherent coupled-reaction-channels analysis of existing and new p + Be9 data between 1.7 and 15 MeV/nucleon

Keeley¹,

Pakou²,

Soukeras³

et al. 2019

Phys. Rev. C

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New data for the elastic scattering of 9 Be from protons were obtained and analyzed together with data from the literature in a coherent coupled-reaction-channels approach. The new measurements were performed in inverse kinematics at 15, 22 and 51 MeV (1.67, 2.44, and 5.67 MeV/nucleon) by detecting the heavy ejectile in the MAGNEX spectrometer. This enabled an almost full angular distribution to be obtained, extending the results to forward angles where calculated values coincide and give the opportunity of proper normalization. Previous inconsistencies in absolute normalization between different data sets are removed. Standard collective model form factors fail to reproduce the inelastic scattering to the 2.43 MeV 5/2 − state of 9 Be, suggesting that a more sophisticated approach based on the cluster structure of 9 Be is required to describe this process.

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Section: Coupled Reaction Channels Calculationsmentioning

confidence: 99%

Section: Coupled Reaction Channels Calculationsmentioning

confidence: 99%

Coherent coupled-reaction-channels analysis of existing and new p + Be9 data between 1.7 and 15 MeV/nucleon

Keeley¹,

Pakou²,

Soukeras³

et al. 2019

Phys. Rev. C

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“…For the ~ particles the transmission coefficients were calculated with an optical model potential parameter set of Blieden et al [35]. A value of 2 was taken for the spin cut off parameter ~ in agreement with the trend of the systematics in Ref.…”

Section: Polynominalsmentioning

confidence: 99%

The (n,α) reactions on11B,14N and16O with 14 MeV neutrons

et al. 1973

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“…Although there have been a large number of isolated measurements of (a,d) cross sections, the number of transitions for which the differential cross sections have been measured over a large angular range is quite small and corresponds to an even smaller number of light target nuclei, A < 16. 2 -7 ' [10][11][12][13][14][15][16][17][18][19] Up to the present time the (a y d) angular distributions have only been analyzed in terms of various plane-wave formulations. These: analyses were performed on data corresponding to the following target nuclei and incident alpha-particle energies: Li 6 at 10.15, 16 11.5, 16 13.2, 16 14.7, 17 43, 10 and 48 MeV 7 ; Li 7 at 48 MeV 4 ; Be 9 at 48 MeV 15 ; B 10 at 3.80 MeV 14 ' 20 ; C 12 at 48 MeV 3 ; N 14 at 43 10 and 46.5 MeV 4 -7 ; and N 15 at 46.5 MeV.…”

Section: Introductionmentioning

confidence: 99%

“…2 -7 ' [10][11][12][13][14][15][16][17][18][19] Up to the present time the (a y d) angular distributions have only been analyzed in terms of various plane-wave formulations. These: analyses were performed on data corresponding to the following target nuclei and incident alpha-particle energies: Li 6 at 10.15, 16 11.5, 16 13.2, 16 14.7, 17 43, 10 and 48 MeV 7 ; Li 7 at 48 MeV 4 ; Be 9 at 48 MeV 15 ; B 10 at 3.80 MeV 14 ' 20 ; C 12 at 48 MeV 3 ; N 14 at 43 10 and 46.5 MeV 4 -7 ; and N 15 at 46.5 MeV. 4 While considerable effort has been directed with some success toward obtaining detailed descriptions of the states of very light nuclei, for.…”

Section: Introductionmentioning

confidence: 99%

Study of theP31(α,d0,1)
Srivastava
¹
,
Cosper
²
,
Johnson
³

1967
Phys. Rev.

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The 18.72-MeV differential cross sections for the P 31 (a,d)S 33 reactions leading to the ground and 0.841-MeV states of S 33 have been measured from 15° to 170° at 5° intervals. The deuteron spectra were determined using a spectrometer configuration which incorporated an EX AE mass identification system and an (E,AE) counter telescope consisting of two silicon surface-barrier detectors. The target was prepared by the thermal vacuum evaporation of red phosphorus (650±12 /xg/cm 2 ) onto a thin Formvar film (~20 /xg/cm 2 ). In contrast to the well-defined oscillatory shape of the angular distribution associated with the transition to the 0.841-MeV state, that corresponding to the transition to the ground state has only washed-out undulations. The integrated cross sections for the ground and 0.841-MeV state reactions are 724±16/*b (16.9°-171.3°) and 425±10 fjb (17.0°-171.3°), respectively. An analysis of the data in the distorted-wave Born approximation has been made in terms of a zero-range, knock-out model in which the initial (final) nuclear state is represented as a two-body system with a deuteron (alpha particle) bound to a Si 29 core. Good agreement between the experimental and theoretical angular distributions was achieved. The analyses require a 2si/2 state for the (d,Si 29 ) system representing the ground state of P 31 , and ldz/2 and 2si/ 2 states for the (ajSi 29 ) system representing the ground and 0.841-MeV states of S 33 , respectively. An interpretation of the experimental results on the basis of the dominant shell-model configurations for the states of P 31 and S 33 yields the conclusion that there is no enhancement of the transition in which the members of the transferred nucleon pair enter equivalent orbitals relative to that in which the nucleons enter nonequivalent orbitals. ^ * Work supported in part by the U. S. Atomic Energy Commission.t This report is based on part of a thesis submitted by B. B. Srivastava to the faculty of Purdue University in partial fulfillment of the requirements for the degree of Ph.D. in physics.

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A study of the Be9(p, α)Li6 reaction from 3.5 to 12.5 MeV

Cited by 32 publications

References 15 publications

Coherent coupled-reaction-channels analysis of existing and new p + Be9 data between 1.7 and 15 MeV/nucleon

Coherent coupled-reaction-channels analysis of existing and new p + Be9 data between 1.7 and 15 MeV/nucleon

The (n,α) reactions on11B,14N and16O with 14 MeV neutrons

Study of theP31(α,d0,1)
Srivastava
¹
,
Cosper
²
,
Johnson
³

1967
Phys. Rev.

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A study of the Be9(p, α)Li6 reaction from 3.5 to 12.5 MeV

Cited by 32 publications

References 15 publications

Coherent coupled-reaction-channels analysis of existing and new p + Be9 data between 1.7 and 15 MeV/nucleon

Coherent coupled-reaction-channels analysis of existing and new p + Be9 data between 1.7 and 15 MeV/nucleon

The (n,α) reactions on11B,14N and16O with 14 MeV neutrons

Study of theP31(α,d0,1)Srivastava1, Cosper2, Johnson3 1967Phys. Rev.

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About

Study of theP31(α,d0,1)
Srivastava
¹
,
Cosper
²
,
Johnson
³

1967
Phys. Rev.