scholarly journals The radioactive decay of 190Re and isomer ratio measurements in photonuclear reactions

1970 ◽  
Author(s):  
Peter Eugene Haustein
Keyword(s):  
Radioactive Decay ◽  
Isomer Ratio ◽  
Photonuclear Reactions

Studies of cross-sections of short-halflife isomer states excitation in photonuclear reactions

1998 ◽  
Vol 3 (0) ◽  
pp. 8-10
Author(s):  
Й. З. Беседа ◽  
В. С. Бохінюк ◽  
А. І. Гутій ◽  
А. П. Осипенко ◽  
Н. В. Пащенко ◽  
...  
Keyword(s):  
Cross Sections ◽  
Photonuclear Reactions

scholarly journals Measurements of Neutrons from Photonuclear Reactions Using Laser Compton Scattering Gamma Rays

2018 ◽  
Vol 13 (0) ◽  
pp. 2404066-2404066
Author(s):  
Shuji MIYAMOTO ◽  
Akinori TAKEMOTO ◽  
Masashi YAMAGUCHI ◽  
Kento SUGITA ◽  
Satoshi HASHIMOTO ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Gamma Rays ◽  
Photonuclear Reactions ◽  
Laser Compton Scattering

Band structure in81Y and its radioactive decay

1985 ◽  
Vol 11 (8) ◽  
pp. 969-979 ◽  
Author(s):  
C J Lister ◽  
R Moscrop ◽  
B J Varley ◽  
H G Price ◽  
E K Warburton ◽  
...  
Keyword(s):  
Band Structure ◽  
Radioactive Decay

Self-glowing crystals–radioactive decay energy converters into optical emission

2021 ◽  
Vol 142 ◽  
pp. 111431
Author(s):  
M.V. Zamoryanskaya ◽  
E.V. Dementeva ◽  
K.N. Orekhova ◽  
V.A. Kravets ◽  
A.N. Trofimov ◽  
...  
Keyword(s):  
Radioactive Decay ◽  
Optical Emission ◽  
Decay Energy ◽  
Energy Converters

scholarly journals Mechanistic Study on the Reaction of pinB-BMes2 with Alkynes Based on Experimental Investigation and DFT Calculations: Gradual Change of Mechanism Depending on the Substituent

2021 ◽  
Author(s):  
Linlin Wu ◽  
Chiemi Kojima ◽  
Ka Ho Lee ◽  
Shogo Morisako ◽  
Zhenyang Lin ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Transition Metal ◽  
Dft Calculations ◽  
Kinetic Analysis ◽  
Reaction Rate ◽  
Mechanistic Study ◽  
Isomer Ratio ◽  
Gradual Change ◽  
Isomeric Mixture ◽  
Metal Free

Transition-metal free direct and base-catalyzed 1,2-diborations of arylacetylenes using pinB-BMes2 provided syn/anti-isomeric mixture of diborylalkenes. The kinetic analysis showed that the reaction rate and isomer ratio were affected by reaction...

Krypton 85 myocardial blood flow: precordial scintillation versus coronary sinus sampling

1965 ◽  
Vol 209 (4) ◽  
pp. 705-710 ◽  
Author(s):  
Michael D. Klein ◽  
Lawrence S. Cohen ◽  
Richard Gorlin
Keyword(s):  
Blood Flow ◽  
Myocardial Blood Flow ◽  
Coronary Sinus ◽  
Human Subjects ◽  
Radioactive Decay ◽  
Empirical Correction ◽  
Wide Range ◽  
Actual Flow ◽  
Flow Through ◽  
High Degree

Myocardial blood flow in human subjects was assessed by comparative simultaneous measurement of krypton 85 radioactive decay from coronary sinus and precordial scintillation. Empirical correction of postclearance background from precordial curves yielded a high degree of correlation between flows derived from the two sampling sites (r = .889, P < .001). Comparison of left and right coronary flows in nine subjects revealed similarity in flow through the two vessels over a wide range of actual flow values (r = .945, P < .001).

scholarly journals Nuclide++: A C++ module to include DDEP recommended radioactive decay Data in Geant4

2020 ◽  
Vol 156 ◽  
pp. 108964
Author(s):  
C. Thiam ◽  
C. Dulieu ◽  
X. Mougeot ◽  
A. Nair ◽  
C. Bobin ◽  
...  
Keyword(s):  
Radioactive Decay ◽  
Decay Data

Fundamental Studies of Plutonium Aging

MRS Bulletin ◽  
2001 ◽  
Vol 26 (9) ◽  
pp. 679-683 ◽  
Author(s):  
Brian D. Wirth ◽  
Adam J. Schwartz ◽  
Michael J. Fluss ◽  
Maria J. Caturla ◽  
Mark A. Wall ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Conduction Band ◽  
Ambient Pressure ◽  
Radioactive Decay ◽  
Bound State ◽  
Environmental Safety ◽  
Structure Theory ◽  
Cubic Phase ◽  
High Symmetry ◽  
Safety And Health

Plutonium metallurgy lies at the heart of science-based stockpile stewardship. One aspect is concerned with developing predictive capabilities to describe the properties of stockpile materials, including an assessment of microstructural changes with age. Yet, the complex behavior of plutonium, which results from the competition of its 5f electrons between a localized (atomic-like or bound) state and an itinerant (delocalized bonding) state, has been challenging materials scientists and physicists for the better part of five decades. Although far from quantitatively absolute, electronic-structure theory provides a description of plutonium that helps explain the unusual properties of plutonium, as recently reviewed by Hecker. (See also the article by Hecker in this issue.) The electronic structure of plutonium includes five 5f electrons with a very narrow energy width of the 5f conduction band, which results in a delicate balance between itinerant electrons (in the conduction band) or localized electrons and multiple lowenergy electronic configurations with nearly equivalent energies. These complex electronic characteristics give rise to unique macroscopic properties of plutonium that include six allotropes (at ambient pressure) with very close free energies but large (∼25%) density differences, a lowsymmetry monoclinic ground state rather than a high-symmetry close-packed cubic phase, compression upon melting (like water), low melting temperature, anomalous temperature-dependence of electrical resistance, and radioactive decay. Additionally, plutonium readily oxidizes and is toxic; therefore, the handling and fundamental research of this element is very challenging due to environmental, safety, and health concerns.

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