Energy Levels of Light Nuclei. III

Hornyak, W.F.; Lauritsen, T.; Morrison, Philip; Fowler, William A.

doi:10.1103/revmodphys.22.291

Cited by 156 publications

(25 citation statements)

References 746 publications

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“…The reaction 6Li (n, ~)3H, which was studied in detail for example by Livingston and Hoffman (1938), yields 3H (Tritium), which decays to SHe by fi-particle emission with a half life of 12-5 years. (Jenks, Ghormley andSweeton 1949, see also Hornyak, Lauritsen, Morrison andFowler 1950;) Hill supposed that for the production of 3He the bombarding neutrons were those associated with cosmic radiation and thus was able to make an estimate of the resulting 3He abundance. It is probable, however, that this mechanism is by itself insufficient to account for the 3He abundance in the air, although it may be adequate to provide much of the SHe found in gas wells and in minerals.…”

mentioning

confidence: 99%

Properties of helium three at low temperatures

Daunt

1952

Advances in Physics

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confidence: 99%

Properties of helium three at low temperatures

Daunt

1952

Advances in Physics

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“…According to both the Wigner model and the Mayer shell model, 6 the ground states of Be 7 and Li 7 are Pm states, while there is evidence that the excited state of Li 7 , denoted here by Li 7 *, has spin }.• The energies of decay to ground and excited states are 0.88 and 0.40 Mev, respectively. 7 The fraction of all Be 7 decays going to Li 7 * is 0.118±0.01. 8 The Be 7 -Li 7 and Be 7 -Li 7 * transitions may be represented as Pm-Pm and Pm-Pm.…”

Section: Sm-smmentioning

confidence: 93%

On the Type of Interaction inβ-Decay

Moszkowski

1951

Phys. Rev.

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The cross section in the present experiment is larger than that given for 2.5-Mev neutrons in the preliminary report by Graves and Coon. If the present measurements are averaged over the larger energy spread used by these authors, a cross section of about 20 millibarns is obtained compared to 5 millibarns observed by Graves and Coon. The shape of the cross section curve given in Fig. 2 is in agreement with the yield curve published by Sikkema. 3 * Work supported by the AEC and the Wisconsin Alumni Research Foundation. t AEC Predoctoral Fellow. » C. H. Johnson and H. H. Barschall, Phys. Rev. 80, 818 (1950). 2 E. R. Graves and J. H. Coon, Phys. Rev. 70, 101 (1946). In more recent measurements, these authors find the above quoted reaction energy instead of -0.6 Mev as originally reported (private communication).3 C. P. Sikkema, Nature 165, 1016 (1950).

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“…To these various emissions a small contribution from the bombardment of oxygen and carbon contamination may be added (Hornyak et al 1950). Detection by the counters of these emissions can reduce the counting accuracy by causing a high random to true coincidence ratio and by detecting true coincidences from the Be9(d,p)BelO*yBelO reaction.…”

Section: Methodsmentioning

confidence: 99%