The search for sterile neutrinos is one of the hottest topics in the neutrino physics in this decade. The JSNS2 (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment aims to search for the existence of neutrino oscillations with ∆m2 near 1eV2 at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 1 MW of 3 GeV proton beam created by Rapid Cy...

The influence of exponential magnetic field decay on the spin evolution of isolated neutron stars is studied. ROSAT observations have revealed several X-ray sources which may be accreting old isolated neutron stars. Assuming that this interpretation is correct, the observations can be used to constrain parameters of the exponential field decay. We show that the range of minimum value of magneti...

A gamma-ray burst fireball is likely to contain an admixture of neutrons. Inelastic collisions between differentially streaming protons and neutrons in the fireball produce nu(&mgr;) (nu;(&mgr;)) of approximately 10 GeV as well as nu(e) (nu;(e)) of approximately 5 GeV, which could produce approximately 7 events/year in km(3) detectors, if the neutron abundance is comparable to that of protons. ...

Beta decay of the neutron into a proton, electron, and electron antineutrino is occasionally accompanied by the emission of a photon. Despite decades of detailed experimental studies of neutron beta-decay, this rare branch of a fundamental weak decay has never been observed. An experiment to study the radiative beta-decay of the neutron is currently being developed for the NG-6 fundamental phys...

Impact of the first-forbidden β decay on the production of A ∼ 195 r-process peak a r t i c l e i n f o a b s t r a c t First-forbidden transition Neutron emission QRPA We investigated the effects of first-forbidden transitions in β decays on the production of the r-process A ∼ 195 peak. The theoretical calculated β-decay rates with β-delayed neutron emission were examined using several astroph...

We show, that different types of isolated neutron stars (INSs) show evidence in favor of magnetic field decay in these objects and discuss how observations of INSs can help to constrain models of field decay.

Beta-decay gross properties of neutron-rich isotopes 104 Y and Tc produced in 25 MeV proton-induced fission of U have been measured. Decays of 104 Y with a half-life of 180"60 ms and of Tc with a half-life of 150"30 ms are 112,113,114 Ž . reported for the first time. Beta-delayed neutron emission probabilities of Tc are determined as 1.5"0.2 %, Ž . Ž . 2.1"0.3 % and 1.3"0.4 %, respectively. Com...

The Neutron induced activity and decay heat are very important for the nuclear design of fusion reactor. In this paper, activation analysis of DEMO reactor with helium-cooled solid blanket (HCSB-DEMO) was performed. Ceramics Li4SiO4 and Beryllium options were considered as tritium breeding material and neutron multiplier, respectively. Chinese low-activation ferritic steel (CLF-1) developed in ...

We have calculated the masses, deformations, and other properties of 8979 nuclei ranging from O to 136 and extending from the proton drip line to the neutron drip line on the basis of the 1992 version of the finite-range droplet model. The predicted quantities include the ground-state mass, deformation, microscopic correction, odd-proton and odd-neutron spins and parities, proton and neutron pa...

The recent experimental results on deep inelastic polarized lepton scattering off proton, deuteron and He together with polarized neutron β-decay data are analyzed. It is shown that the problem of Ellis-Jaffe and Bjorken sum rules deficiency and the neutron paradox could be solved simultaneously by assuming the small right handed current (RHC) admixture in the weak interaction Lagrangian. The p...