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[en] The theoretical motivation for and a possible experimental approach to higher precision measurement of the muon g-2 value are discussed. The goal is to measure a = (g-2)/2 to a precision of 0.3 ppm, which would be an improvement by a factor of 20 over the present value from a CERN experiment. The approach would involve a superconducting muon storage ring and would utilize the very high primary proton beam intensity now available at the Brookhaven National Laboratory AGS
[en] We study theoretically the magnetic bipolar transistor, and compare its performance with common bipolar transistor. We present not only the simulation results for the characteristic curves, but also other relevant parameters related with its performance, such as: the current amplification factor, the open-loop gain, the hybrid parameters and the cutoff frequency. We noted that the spin-charge coupling introduces new phenomena that enrich the functionality characteristics of the magnetic bipolar transistor. Among other things, it has an adjustable band structure, which may be modified during the device operation; it exhibits the already known spin-voltaic effect. On the other hand, we observed that it is necessary a large g-factor to analyze the influence of the field B over the transistor. Nevertheless, we consider the magnetic bipolar transistor as a promising device for spintronic applications
[en] Lande factors have been measured in several laser excited levels of the Bsup(3)Σsub(u)sup(-) state of 80Se2. The results are in reasonably good agreement with recently published theoretical values and fine structure determinations
[en] The scope for determining absolute gravitational potential phi is discussed. It is shown by two quite distinct methods, one relying one data from electron g-factor measurements and the other on the 3K cosmic background data, that the absolute value of phi at the Earth's surface is only 8% greater then that due to the mass of the solar system. It is inferred that gravitation has a range of action limited to a distance of a few hundred light years
[en] In this article, general discharge characteristics of a cylindrical magnetron sputtering system with an annual sputtering zone and a high target usage coefficient designed for transparent conducting coatings are shown. Two coupled DC-cathodes are used to improve coating uniformity. Radial sputtered material fluxes are being created. The engineered magnetic system is extremely balanced (G-factor is much higher than 2) and thus provides maximal effective operating power higher than 6 kW. The effectiveness of a magnetic trap results in a fast work cycle (less than 1.5 min) and a high target material usage coefficient (higher than 40%). A multipole magnetic field with null magnetic flux density zones lower target’s surface is being created. There is an influence between cathode modules despite mutual magnetic isolation, so magnetic conductors-shunts are used to weaken it. The magnetron can be used to sputter both metals and conducting ceramics (including ITO). (authors)
[en] A high precision in g-factor measurements is achieved by placing the ESR sample in the centre of a NMR-probe containing glycerol doped with 0,2 m CuSO4. Both absorption lines are measured and stored simultaneously by means of a signal averager. The relation between field values and memeory addresses is obtained by slight shifting of the NMR oscillator frequency in each run. Applying this method to the measurement of the g-factor of tetracene+ yields g=2,0026355+-3,1 ppm referred to the free proton
[en] We have studied the effect of atomic electrons on the nuclear transition from the isomeric 229mTh state to the ground 229gTh state in 229Th+ due to the electronic bridge process. The exact value of the nuclear transition frequency is unknown so far; therefore, we have developed a formalism that can be used for any nuclear transition frequency. We have calculated positions of several high-lying even-parity states which are not presented in experimental atomic spectra databases. We have found their energy levels and g factors.
[en] We have recently applied the generalized seniority approach successfully to explain the B(E1)/B(E2)/ B(E3) properties of the semi-magic nuclei. In the present paper, we extend this approach to the Schmidt model as Generalized Seniority Schmidt Model and calculate the g-factors of the various seniority states in the semi-magic nuclei. We find that the magnetic moments and the g-factors do show a particle number independent behavior in multi-j configurations, as expected in the seniority scheme. The calculated results explain the experimental trends quite well. We find that the g-factors of all the seniority states arising from a given multi-j configuration for identical nucleons is equal to the g-factor of the seniority state from that configuration. Also, the g-factors are found to be a sensitive probe for fixing the multi-j configuration, which are fully consistent with the configurations assigned to explain the B(EL) properties in our previous works. We are also able to make definite predictions for many cases.
[en] The g factor of the 5+530μs isomeric state in 122Sb was determined by pulsed beam time differential γ-ray measurements following the 122Sn(d,2n)122Sb reaction. The experimental g-factor, g = +0.61 +- 0.02 (μ = +3.05 +- 0.10 n.m.), suggests the configuration [π(1gsub(7/2))1ν(2dsub(3/2))1]sub(5+) for this state. (author)