Nuclear Data Sheets for A = 228

Horen, D.J.

doi:10.1016/s0090-3752(76)80042-7

Cited by 20 publications

(2 citation statements)

References 24 publications

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“…' Beck (1972),reported abso lute gamma-ray yields for the entire decay chain. Evaluated yields for the decay of 2 28Ac were given by Horen (1976) and are adopted here. For the gamma rays emitted by the daughters of 22 8 Th, Heath (1974) and Avignone and Schmidt (1978) reported relative yields (which were normalized assuming a yield of 0.307 for the 583.1 keV line produced by the decay of 2 08 TI).…”

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confidence: 99%

Gamma-ray spectroscopy in astrophysics

Ramaty

Kline

Weaver

1978

Nature

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This was the first symposium devoted entirely to spectroscopy in gamma ray astronomy. Its purposes were to bring together most of the scientists contributing to all the aspects, experimental and theoretical, of this new field and to discuss and compare ideas, measurements, calcu lations and technical experience in what we confidently expect to be a very important new discipline in high energy astrophysics.This goal was achieved, we feel, in that a very large fraction of all that is known about gamma ray spectroscopy in astrophysics was indeed presented or discussed at the Symposium, yet many of these results are new, presented here for the first time. Further, the discipline is on the brink of moving to the next level of development within the coming year, with a number of satellite experiments and major balloon experiments in gamma ray spectroscopy and in related astrophysical sciences about to be launched. We therefore felt that we should publish the Proceedings as soon as possible, without the delays involved in reformatting the manuscripts and extensive editing. We hope that the information that will thus become available will prove to be useful to all workers in these fields.We have ordered the papers approximately as presented, with experimental and theoretical papers combined in each session. The introductory session is followed by the sessions on solar, stellar, and planetary gamma ray spectroscopy, and on cosmic gamma ray spectroscopy, with the technical discussions and previews of new experiments in the last two sessions.The Symposium was organized by the editors of these proceedings, T. L. Cline and R. Ramaty. We wish to thank the Symposium Session Chairmen, D. D. Clayton, and M. M. Shapiro, and the Workshop Session Chairmen, G. J. Fishman and N. S. Wall, for their assistance. We are grateful to R. C. Reedy for supplying us the manuscript on Planetary Gamma Ray Spectro scopy which was not presented at the Symposium. This paper is taken from the Proceedings of the Ninth Lunar and Planetary Science Conference (Pergamon Press 1978, with permission). We are also indebted to R. W. Bussard and R. P. Weaver for their help in running the conference. We thank F. B. McDonald for his continued support of this Symposium, and R. S. Cooper for his interest and his contribution. We thank Barbara Pratt in particular for her excellent secretarial help with both the organization of the Symposium and the preparation of this document. It is a pleasure for me to be here and welcome you all to the Goddard Space Flight Center. I noticed from the agenda that we have speakers from all the major groups that are interested in high energy astronomy and in particular in gamma ray astronomy virtually in the entire free world. The agenda is particularly interesting to me and I intend to spend as much of my time here over the next day as I can. I would like to make a couple of points. The people here at Goddard know that when they give me an oppor tunity to come and welcome you, the potential is always there for me to say something...

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confidence: 99%

Gamma-ray spectroscopy in astrophysics

Ramaty

Kline

Weaver

1978

Nature

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“…Only in heavier elements, like Cm and Cf, do the positive-parity non-rotational excitations appear to be observed below the octupole levels. The full set of one-phonon octupole bands have been established in at least three cases of the actinide nuclei: 22sTh (Horen 1976), 232Th (Chan et a1 1982, Chan and and 234U (Ellis 1977). The experimental energy spectrum of 228Th is shown in figure 17.…”

Section: Theoretical Descriptions and Experimental Datamentioning

confidence: 99%