Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 68 - 74 |
| Number of pages | 7 |
| Journal | Metrologia |
| Volume | 45 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2008 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- energy loss measurement
- materials
- superconductivity
- superconducting calorimeters
- cryogenic
- niobium
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Loss measurements on superconducting Nb by a cryogenic dual compensated calorimeter for the implementation of the kilogram standard by the levitation mass method. / Kajastie, H. (Corresponding Author); Nummila, Kaj; Rautiainen, Anssi; Riski, K.; Satrapinski, A.
In: Metrologia, Vol. 45, No. 1, 2008, p. 68 - 74.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Loss measurements on superconducting Nb by a cryogenic dual compensated calorimeter for the implementation of the kilogram standard by the levitation mass method
AU - Kajastie, H.
AU - Nummila, Kaj
AU - Rautiainen, Anssi
AU - Riski, K.
AU - Satrapinski, A.
PY - 2008
Y1 - 2008
N2 - A cryogenic dual compensated calorimeter was constructed for energy loss measurements in superconducting materials. The losses induced by slowly varying periodic magnetic fields (amplitudes <50 mT) in field-generating coils fabricated from different niobium wires were at the level of 500 nJ/cycle. Measurable losses are caused by incomplete Meissner effect in tested superconducting materials. The results of the study show the difficulties and limitations in the implementation of the kilogram standard using the 'superconducting magnetic levitation mass' method.
AB - A cryogenic dual compensated calorimeter was constructed for energy loss measurements in superconducting materials. The losses induced by slowly varying periodic magnetic fields (amplitudes <50 mT) in field-generating coils fabricated from different niobium wires were at the level of 500 nJ/cycle. Measurable losses are caused by incomplete Meissner effect in tested superconducting materials. The results of the study show the difficulties and limitations in the implementation of the kilogram standard using the 'superconducting magnetic levitation mass' method.
KW - energy loss measurement
KW - materials
KW - superconductivity
KW - superconducting calorimeters
KW - cryogenic
KW - niobium
U2 - 10.1088/0026-1394/45/1/010
DO - 10.1088/0026-1394/45/1/010
M3 - Article
VL - 45
SP - 68
EP - 74
JO - Metrologia
JF - Metrologia
SN - 0026-1394
IS - 1
ER -