PROGRESS IN THE ESTABLISHMENT OF A JOSEPHSON VOLTAGE STANDARD AT THE SPANISH TPA

Authors
CAMON A LOPEZ M LERA F PINTO P LORENZO L LAMANA JM RILLO C NAVARRO R
Citation
A. Camon et al., PROGRESS IN THE ESTABLISHMENT OF A JOSEPHSON VOLTAGE STANDARD AT THE SPANISH TPA, IEEE transactions on instrumentation and measurement, 42(2), 1993, pp. 593-595
Citations number
4
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
IEEE transactions on instrumentation and measurement → ACNP
ISSN journal
00189456
Volume
42
Issue
2
Year of publication
1993
Pages
593 - 595
Database
ISI
SICI code
0018-9456(1993)42:2<593:PITEOA>2.0.ZU;2-K
Abstract
A one volt Josephson voltage standard which easily permits exchange of Josephson junction arrays (JJA's) has been constructed and installed at the Spanish TPA. Two different types of JJA's, Nb/NbO(x)/PbInAu fro m NIST and Nb/Al2O3/Nb from PTB, have been used to determine the evolu tion of Zener references, both being compatible with our system. No di screpancies within our uncertainty (18 parts in 10(9)) were observed w hen, for a given reference, the arrays were interchanged. Moreover, pr eliminary calibration results obtained at two other laboratories-in on e of our references-show good agreement with our data.