Improvement of the phase transition homogeneity of superheated superconducting tin granules

Authors
Calatroni, S Casalbuoni, S Czapek, G Ebert, T Hasenbalg, F Hauser, M Janos, S Kainer, KU Knoop, KM Moser, U Palmieri, VG Pretzl, K Sahli, B Sgobba, S Vollenberg, W Wyss, CP
Citation
S. Calatroni et al., Improvement of the phase transition homogeneity of superheated superconducting tin granules, NUCL INST A, 444(1-2), 2000, pp. 285-288
Citations number
6
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
444
Issue
1-2
Year of publication
2000
Pages
285 - 288
Database
ISI
SICI code
0168-9002(20000411)444:1-2<285:IOTPTH>2.0.ZU;2-J
Abstract
A considerably improved phase transition homogeneity was observed with supe rheated superconducting Sn spheres as a result of laser melting and fast co oling. These spheres exhibited a very homogeneous phase transition behaviou r independent of the orientation of the spheres with respect to the directi on of the external magnetic field. Compared to previously untreated Sn sphe res the spread of the phase transition boundaries was reduced by almost an order of magnitude. In addition, we studied mass production of Sn structure s using vacuum evaporation and deposition. First encouraging results are re ported. (C) 2000 Elsevier Science B.V. All rights reserved.