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We describe a new method to incorporate thermonuclear heating in the envelope of accreting neutron star into long term simulations of their thermal evolution. We obtain boundary conditions for the heat exchange between the envelope and the…

High Energy Astrophysical Phenomena · Physics 2025-09-01 Martin Nava-Callejas , Dany Page , Yuri Cavecchi

The penetration of magnetic flux into a thin superconducting film of Nb3Sn with critical temperature 17.8K and critical current density 6MA/cm^2 was visualized using magneto-optical imaging. Below 8 K an avalanche-like flux penetration in…

Superconductivity · Physics 2016-08-31 I. A. Rudnev , S. V. Antonenko , D. V. Shantsev , T. H. Johansen

We present a brief, observational review about the study of the cooling behaviour of accretion-heated neutron stars and the inferences about the neutron-star crust and core that have been obtained from these studies. Accretion of matter…

High Energy Astrophysical Phenomena · Physics 2017-09-22 Rudy Wijnands , Nathalie Degenaar , Dany Page

Improved trapped fields are reported for bulk melt-textured YBa2Cu3O7-x (YBCO) material in the temperature range between 20 K and 50 K. Trapped fields up to 12.2 T were obtained at 22 K on the surface of single YBCO disks (with Ag and Zn…

Superconductivity · Physics 2009-11-07 S. Gruss , G. Fuchs , G. Krabbes , P. Verges , G. Stover , K. -H. Muller , J. Fink , L. Schultz

We performed inelastic neutron scattering experiment to study magnetic excitation of O$_2$ molecules adsorbed in microporous compound. The dispersionless excitation with characteristic intensity modulation is observed at $\hbar \omega =…

Strongly Correlated Electrons · Physics 2009-11-13 T. Masuda , S. Takamizawa , K. Hirota , M. Ohba , S. Kitagawa

During the 2011 run of the LHC there was a significant measured temperature increase in the LHC Injection Kicker Magnets (MKI) during operation with 50ns bunch spacing. This was due to increased beam-induced heating of the magnet due to…

Accelerator Physics · Physics 2012-07-17 Hugo Day , Michael Barnes , Fritz Caspers , Roger Jones , Elias Metral , Benoit Salvant

The defining trait of magnetars, the most strongly magnetized neutron stars (NSs), is their transient activity in the X/$\gamma$-bands. In particular, many of them undergo phases of enhanced emission, the so-called outbursts, during which…

High Energy Astrophysical Phenomena · Physics 2022-09-14 Davide De Grandis , Roberto Turolla , Roberto Taverna , Elisa Lucchetta , Toby S. Wood , Silvia Zane

In this article the neutrino bremsstrahlung process is considered in presence of strong magnetic field, though the calculations for this process in absence of magnetic field are also carried out simultaneously. The electrons involved in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Indranath Bhattacharyya

We report a pronounced peak effect in the magnetization and the magnetocaloric coefficient in a single crystal of the superconductor Nb3Sn. As the origin of the magnetization peak effect in classical type-II superconductors is still…

Superconductivity · Physics 2015-06-25 R. Lortz , N. Musolino , Y. Wang , A. Junod , N. Toyota

It is evaluated the first order temperature correction to the energy of massive neutrino in the case of weak magnetic field.

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Gogberashvili , L. Midodashvili , P. Midodashvili

The phonon thermal contribution to the melting temperature of nano-particles is inspected. Unlike in periodic boundary condition, under a general boundary condition the integration volume of low energy phonon for a nano-particle is more…

Mesoscale and Nanoscale Physics · Physics 2015-01-09 Xu Yuanyuan , Kang Kai , Qin Shaojing

A recent study of nonextensive phase transitions in nuclei and nuclear clusters needs a probability model compatible with the appropriate Hamiltonian. For magnetic molecules a representation of the evolution by a Markov process achieves the…

Statistical Mechanics · Physics 2009-11-11 Burhan Bakar , L. F. Lemmens

The new NHMFL 60T quasi-continuous magnet produces a flat-top field for a period of 100 ms at 60 Tesla, and for longer time at lower fields, e.g. 0.5 sec at 35 Tesla. We have developed for the first time the capability to measure heat…

Strongly Correlated Electrons · Physics 2007-05-23 M. Jaime , R. Movshovich , J. L. Sarrao , J. Kim , G. Stewart , W. P. Beyerman , P. C. Canfield

Neutron stars in low-mass X-ray binaries are thought to be heated up by accretion-induced exothermic nuclear reactions in the crust. The energy release and the location of the heating sources are important ingredients of the thermal…

High Energy Astrophysical Phenomena · Physics 2023-10-02 Nikolay N. Shchechilin , Mikhail E. Gusakov , Andrey I. Chugunov

The efficiency of the adiabatic demagnetization of nuclear spin system (NSS) of a solid is limited, if quadrupole effects are present. Nevertheless, despite a considerable quadrupole interaction, recent experiments validated the…

Mesoscale and Nanoscale Physics · Physics 2021-12-15 V. M. Litvyak , R. V. Cherbunin , V. K. Kalevich , A. I. Lihachev , A. V. Nashchekin , M. Vladimirova , K. V. Kavokin

Based on recent studies of the temperature dependence of the energy and specific heat of liquid nuclear matter, a phase transition is suggested at a temperature $\sim .8$ MeV. We apply Landau Ginzburg theory to this transition and determine…

Nuclear Theory · Physics 2009-10-30 R. A. Ritchie , H. G. Miller , F. C. Khanna

Precise magnetic hysteresis measurements of small single crystals of Mn$_{12}$ acetate of spin 10 have been conducted down to 0.4 K using a high sensitivity Hall magnetometer. At higher temperature (>1.6K) step-like changes in magnetization…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Andrew D. Kent , Yicheng Zhong , Louisa Bokacheva , Daniel Ruiz , David N. Hendrickson , M. P. Sarachik

We demonstrate the possiblity to cool nanoelectronic systems in nonequilibrium situations by increasing the temperature of the environment. Such cooling by heating is possible for a variety of experimental conditions where the relevant…

Mesoscale and Nanoscale Physics · Physics 2018-08-15 R. Härtle , C. Schinabeck , M. Kulkarni , D. Gelbwaser-Klimovsky , M. Thoss , U. Peskin

We propose an explanation for the experimentally observed temperature hysteresis of magnetization in single crystals of lanthanum manganite (La0.8Sr0.2MnO3). The phenomenon is interpreted within the framework of a double-exchange model with…

Materials Science · Physics 2007-05-23 A. P. Saiko , S. A. Markevich

Time-resolved pump-probe measurements were made at variable heat accumulation in Co/Pd superlattices. Heat accumulation increases the baseline temperature and decreases the equilibrium magnetization. Transient ultrafast demagnetization…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 F. Hoveyda , E. Hohenstein , R. Judge , S. Smadici