Gamma Rays fromB10+p; Decay Schemes and Excitation Functions

R. E. Segel; P. P. Singh; S. S. Hanna; M. A. Grace

doi:10.1103/physrev.145.736

Gamma-ray production in the 170Er(p,n)170Tm nuclear reaction

Open Physics ◽

10.2478/s11534-009-0157-y ◽

2010 ◽

Vol 8 (4) ◽

Author(s):

Alexandru Mihailescu ◽

Gheorghe Cata-Danil

Keyword(s):

High Resolution ◽

Energy Range ◽

Nuclear Reaction ◽

Gamma Rays ◽

Compound Nucleus ◽

Beam Energy ◽

Gamma Ray ◽

Excitation Functions ◽

Γ Ray ◽

First Time

AbstractFor the first time discrete gamma-rays following the nuclear reaction 170Er(p,n)170Tm with enriched target were measured with a high resolution GeHP spectrometer. Protons delivered by the Bucharest FN Tandem Van de Graaff accelerator bombarded a thin self-supporting film of enriched erbium. Measured γ-ray energies (Eγ), their relative intensities (Iγ) and corresponding excitation functions for the beam energy range 2.0–3.6 MeV are reported in the present work. The measured excitation functions were fairly well reproduced by compound nucleus calculations based on the Hauser-Feshbach formalism.

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LOW-LYING ENERGY LEVELS IN Cl-35

Canadian Journal of Physics ◽

10.1139/p61-097 ◽

1961 ◽

Vol 39 (6) ◽

pp. 917-925 ◽

Cited By ~ 17

Author(s):

R. S. Storey ◽

L. W. Oleksiuk

Keyword(s):

Gamma Radiation ◽

Gamma Rays ◽

Energy Levels ◽

Distribution Functions ◽

Angular Distributions ◽

Excitation Functions

The reaction Cl35(p,p′γ)Cl35 has been observed by the gamma radiation arising from the first two excited levels of chlorine-35. Excitation functions for these radiations were measured for a range of proton energies from 2.3 to 3.25 Mev. Many sharp resonances are observed, of which a dozen are prominent. Angular distributions of the gamma rays from the 1.22-Mev and the 1.76-Mev excited levels of Cl35 have been measured over six resonances. The distribution functions, together with additional measurements by other investigators, yield spin assignments of 1/2 and 5/2 for the levels at 1.22 and 1.76 Mev respectively.

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On the possible gamma-ray source in Cygnus

Symposium - International Astronomical Union ◽

10.1017/s0074180900101391 ◽

1967 ◽

Vol 31 ◽

pp. 469-471

Author(s):

J. G. Duthie ◽

M. P. Savedoff ◽

R. Cobb

Keyword(s):

Gamma Rays ◽

Gamma Ray ◽

Right Ascension

A source of gamma rays has been found at right ascension 20h15m, declination +35°, with an uncertainty of 6° in each coordinate. Its flux is (1·5 ± 0·8) x 10-4photons cm-2sec-1at 100 MeV. Possible identifications are reviewed, but no conclusion is reached. The mechanism producing the radiation is also uncertain.

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Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

International Astronomical Union Colloquium ◽

10.1017/s0252921100026208 ◽

1994 ◽

Vol 144 ◽

pp. 635-639

Author(s):

J. Baláž ◽

A. V. Dmitriev ◽

M. A. Kovalevskaya ◽

K. Kudela ◽

S. N. Kuznetsov ◽

...

Keyword(s):

Solar Flare ◽

Energy Range ◽

Gamma Rays ◽

Pulse Shape ◽

Gamma Ray ◽

Pulse Shape Discrimination ◽

Shape Discrimination ◽

Solar Neutron ◽

Low Altitude

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

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Ovarian Dysfunction in Fetally Irradiated Beagles

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100080717 ◽

1977 ◽

Vol 35 ◽

pp. 658-659

Author(s):

T. M. Seed ◽

M. H. Sanderson ◽

D. L. Gutzeit ◽

T. E. Fritz ◽

D. V. Tolle ◽

...

Keyword(s):

Gamma Rays ◽

Low Dose ◽

Long Term Effects ◽

Ovarian Dysfunction ◽

Dose Rates ◽

Highly Sensitive ◽

Microscopic Evaluation ◽

Ovarian Pathology ◽

Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

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