Study of the inverse photodeuteron reaction in 11B and 16O in the giant resonance energy region

doi:10.1016/0029-5582(66)90758-9

Nuclear Physics

Volume 75, Issue 1, January 1966, Pages 226-240

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Abstract

The radiative capture of deuterons by ⁹Be and ¹⁴N has been studied in the energy range 0.5 MeV < E_d < 5.5 MeV using direct observation of the ground state gamma transition of about 20 MeV energy. After a short description of the experimental method the results of the measurements are given in the form of excitation curves and angular distributions. For the ⁹Be(d, γ₀)¹¹B reaction the excitation curve shows no structure with a total peak cross section of about 8 μb. The results may be interpreted by direct E₁ capture besides the asymmetry of the angular distributions. For the ¹⁴N(d, γ₀)¹⁶O reaction, where the isospin selection rule forbids the E₁ transition, the excitation curve shows a peak at 22.7 MeV excitation energy with a total peak cross section of about 6 μb. The angular distribution at this energy has a predominantly dipole characteristic but also displays asymmetry. The peak cannot be identified with any peak of the giant E₁ resonance of ¹⁶O. There are also indications for peaks at 22.2 and 24.5 MeV excitation energy. The possible interpretations for the ¹⁴N(d, γ₀)¹⁶O cross section are given.

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Nuclear Physics

Abstract

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Inst. Fiz. Jadrowej, Krakov, PAN-IFJ-141

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Phys. Rev. Lett.

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Phys. Rev.

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On the angular distribution of photonucleons from <sup>16</sup>O in the giant resonance region

The <sup>9</sup>Be(d, γ<inf>0</inf>)<sup>11</sup>B reaction in the region of the giant dipole resonance

The <sup>13</sup>C(d, γ<inf>0</inf>)<sup>15</sup>N and the <sup>11</sup>(d, γ<inf>0</inf>)<sup>13</sup>C cross sections in the region of the giant dipole resonance