A study of the higher excited states of 10Be from the 9Be(d, p)10Be reaction

Anderson, Richard E.; Kraushaar, J.J.; Rickey, M.E.; Zimmerman, W. R.

doi:10.1016/0375-9474(74)90222-x

Cited by 26 publications

(11 citation statements)

References 16 publications

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“…In stripping reactions the state has not been observed neither in the reactions 9Be(d, p)l~ and 9Be(p, ~z+)l~ nor in proton stripping (d, n) on 9Be where the analog state could have been excited (Refs. 15,16,17). The angular distributions observed in the present (d, SHe) experiment, displayed in Fig.…”

Section: The Reaction Lib(d 3he)l~mentioning

confidence: 79%

Proton pick-up from nuclei in the middle of the 1p shell

et al. 1975

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Abstract. The (d, 3He) reaction has been used to excite proton hole states in 8Li, 9Be and 1~ Angular distributions have been measured and have been analyzed in terms of the DWBA to get spectroscopic factors for the considered transitions. Excitation energies and transition strengths are compared with the results of Cohen and Kurath's intermediate coupling shell model calculations, where the two models of the effective interaction produce different results especially for transitions to final states in mass 8 and 10 nuclei. The experimental results are clearly in favour of the (6-16) 2 BME interaction. A positive parity state in 1~ predicted by the calculations has been looked for and found at 9.60 MeV.

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Section: The Reaction Lib(d 3he)l~mentioning

confidence: 79%

Proton pick-up from nuclei in the middle of the 1p shell

et al. 1975

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“…2b (the 9 Be+2n threshold is 1.47 MeV above the next strongly excited state at 5.25 MeV). These states show a strong relation to the most strongly populated states in the 9 Be (d, p) 10 Be reaction [14], which are the negative parity states with J π = 2 − , 3 − , 4 − at 6.26, 7.37 and 9.27 MeV. Thus these states observed in 11 Be can be grouped into a rotational band with a moment of inertia similar to or slighty larger than that of the 10 Be-dimer moment of inertia.…”

Section: Ii1 Beryllium Isotopesmentioning

confidence: 95%

“…We repeat here the evidence for rotational bands in 9 Be and 10 Be. This evidence is based mostly on inelastic α-scattering [12], (α, 3 He) reactions [12] as well as (d, p) reactions on 9 Be [14]. The strong population of states shows their direct relation to the 9 Be ground state, which has a large deformation.…”

Section: Ii1 Beryllium Isotopesmentioning

confidence: 95%

“…2a). From the spin assignments given Single neutron stripping reactions on 9 Be populating strong single particle states in 10 Be, in particular the rotational bands of the dimers (adopted from [12,14]). a the 9 Be(d, p)reaction; b the 9 Be(α, 3 He)reaction (in comparison with the reactions (α, t) and ( 3 He, d) leading to states in 10 B).…”

Section: Ii1 Beryllium Isotopesmentioning

confidence: 99%

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Dimers based on the α + α potential and chain states of carbon isotopes

Oertzen

1997

Z Phys A - Particles and Fields

199

222

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Using the well established binding energies of one and two valence neutrons in the two-center α+α system (forming the states in 9 Be and 10 Be * ) the structure of these nuclear dimers and their rotational bands including those with more than 2 nucleons are discussed using published transfer reaction data for Be and Boron isotopes. Based on the 0 + 2 state in 12 C which is supposed to be an 3α particle chain at an excitation energy of 7.65 MeV and using the binding energy of these valence neutrons in 9 Be and 10 Be * , chain states in the system 12 C * + x neutrons are constructed. The energy position of the lowest chain states are estimated and ways for their population in reactions on 9 Be and using radioactive beams are proposed. It is expected that these states are metastable and could have appreciable branches for γ-decay. Further extrapolations to longer chain states (polymers) in neutron rich light isotopes are made.

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“…Based on the reduced widths amplitudes from our R-matrix fit and taking into account isospin Clebsch-Gordon coefficients we estimated the total width of this 2 + state in 10 Be to be ≈ 330 keV. This value seems to be more consistent with the 9 Be(d,p) data [26] that reports a width of 291±20 keV for this state rather than with the 141±10 keV value from the 7 Li( 7 Li,α) data [27].…”

mentioning

confidence: 45%