Results 151 to 160 of about 7,713 (173)
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High-spin states in 40K and 42Ca
Nuclear Physics A, 1981Abstract High spin states in 40K and 42Ca have been investigated using the 27 Al ( 19 F , xyzγ) 40 K , 42 Ca reaction. In-beam measurements of γ-γ coincidences. γ-ray excitation functions and angular distributions were performed with Ge(Li) detectors, one of which had a Nal Compton suppression shield.
P. Herges, H.V. Klapdor, T. Oda
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High precision determination of the terrestrial 40K abundance
Geochimica et Cosmochimica Acta, 2013Abstract Recent improvements in the precision of mass spectrometric measurements have reduced the uncertainty of K–Ar and 39 Ar– 40 Ar ages measured on geological materials. Now the major sources of uncertainty are the uncertainties on the 40 K decay constant and the absolute abundance of 40 K.
Naumenko M.O +3 more
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Schematic model calculations for 40K(β−)40Ca
Nuclear Physics A, 1970Abstract The experimental lifetime of the unique third-forbidden beta-decay branch 40 K( β − ) 40 Ca is five times longer than single-particle estimates for the transition. Using an extended version of the schematic model, this hindrance can be traced to the repulsive nature of the T = 1 particle-hole force.
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40K single-stage coaxial pulse tube cryocoolers
Cryogenics, 2012Abstract Several 40 K single-stage coaxial high frequency pulse tube cryocoolers (PTCs) have been developed to provide reliable and low-noise cooling for GaAs/AlGaAs Quantum-Well infrared photodetectors (QWIPs). The inertance tubes together with the gas reservoir become the only phase shifter to guarantee the required long-term stability.
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Dose and transfer factor ofn 40K in medicinal plants
Radiation Protection DosimetryAbstract The presence of naturally occurring radionuclides is common in all living and non-living frameworks, which are part of our environment. The activity concentration of 40K radionuclide was estimated using gamma spectrometry in some medicinal plants and transfer factors (TF), and Average Annual Committed Effective Dose (AACED) was ...
Chandrashekara Kulal +2 more
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[40K study in laryngeal and stomach cancer].
Voprosy onkologii, 1983Total potassium was assayed in 101 patients (58--laryngeal cancer and 43--stomach cancer) on the basis of natural background radiation of 40K in a low background chamber. Both cellular and extracellular mass of the body was determined. Control group included 260 healthy subjects. Deficiency in cellular and extracellular mass was established.
V K, Titov +2 more
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Identification of 40k γ-secalin genes
Journal of Genetics, 2013Peng-Fei, Qi +7 more
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40K-87Rb Feshbach resonances: Modeling the interatomic potential
2007We have observed 28 heteronuclear Feshbach resonances in ten spin combinations of the hyperfine ground states of a 40K−87Rb mixture. The measurements were performed by observing the loss rates from an atomic mixture at magnetic fields between 0 and 700G.
Klempt, Carsten +6 more
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