Zobrazeno 1 - 10
of 353
pro vyhledávání: '"Flukiger, R."'
Autor:
Flukiger, R., Spina, T.
Publikováno v:
CERN Yellow Report CERN-2013-006, pp.76-82
In view of the safe operation of the quadrupoles in the luminosity upgrade of the LHC accelerator, the response of the copper stabilizer at low temperatures to the various high energy radiation sources is of primary importance. The present study take
Externí odkaz:
http://arxiv.org/abs/1401.3971
Cold high pressure densification (CHPD) is presented as a new way to substantially enhance the critical current density of in situ MgB2 wires at 4.2 and 20 K at fields between 5 and 14 T. The results on two binary MgB2 wires and an alloyed wire with
Externí odkaz:
http://arxiv.org/abs/0901.4546
We report specific heat measurements at magnetic fields up to 20 T on the recently discovered superconductor SmFeAsO$_{0.85}$F$_{0.15}$. The B-T diagram of a polycrystalline SmFeAsO$_{0.85}$F$_{0.15}$ sample with T$_c$ = 46 K was investigated. The te
Externí odkaz:
http://arxiv.org/abs/0805.2389
Autor:
Adesso, M. G., Flukiger, R., Giamarchi, T., Goldacker, W., Kupfer, H., Pace, S., Polichetti, M., Uglietti, D.
We analyse the phase transition between the Bragg Glass and the Disordered phase in the vortex lattice in type-II superconductors, both by analytical computations and experimental investigations. It is known that if the Peak Effect can be detected, a
Externí odkaz:
http://arxiv.org/abs/0706.0998
Autor:
Dou, S. X., Shcherbakova, O., Yeoh, W. K., Kim, J. H., Soltanian, S., Wang, X. L., Senatore, C., Flukiger, R., Dhalle, M., Husnjak, O., Babic, E.
Publikováno v:
Phys. Rev. Lett. 98, 097002 (2007)
A comparative study of pure, SiC, and C doped MgB2 wires has revealed that the SiC doping allowed C substitution and MgB2 formation to take place simultaneously at low temperatures. C substitution enhances Hc2, while the defects, small grain size and
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701391
An improvement of the transport critical current density, Jc, of MgB2 wires was obtained after addition of 10 wt.% B4C powders, after reaction at 800 C: Jc values of 1.10^4 A/cm2 at 4.2 K and 9T were obtained for wires of 1.11 mm diameter in a Fe mat
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607073
Publikováno v:
Superconductor Science and Technology 17 (2004) 395-400
A new DTA (Differential Thermal Analysis) device was designed and installed in a Hot Isostatic Pressure (HIP) furnace in order to perform high-pressure thermodynamic investigations up to 2 kbar and 1200C. Thermal analysis can be carried out in inert
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403556
We report a study of the pinning properties of Fe/MgB2 tapes performed by means of ac magnetic susceptibility measurements. In particular, the third harmonic response has been measured as a function of the dc magnetic field up to 9 T, at different te
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309286
Fe/MgB2 tapes have been prepared starting with pre-reacted binary MgB2 powders. As shown by resistive and inductive measurements, the reduction of particle size to a few microns by ball milling has little influence on Bc2, while the superconducting p
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307398
In a type-II superconductor the generation of higher harmonics in the magnetic response to an alternating magnetic field is a consequence of the non-linearity in the I-V relationship. The shape of the current-voltage (I-V) curve is determined by the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305523