Direct numerical simulations for non-equilibrium superconducting dynamics at the transition edge: Simulation for MgB2 neutron detectors

Masahiko Machida; T. Kano; T. Koyama; M. Kato; T. Ishida

doi:10.1007/s10909-007-9613-5

Direct numerical simulations for non-equilibrium superconducting dynamics at the transition edge: Simulation for MgB₂ neutron detectors

Masahiko Machida, T. Kano, T. Koyama, M. Kato, T. Ishida

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We perform large-scale numerical simulations on the non-equilibrium superconducting dynamics after a neutron capture at the superconducting transition edge in MgB₂ by solving the time-dependent Ginzburg-Landau equation coupled with the Maxwell and the heat diffusion equations. The simulations are carried out under the current-biased condition in order to explain experimental results made in the JAEA reactor JRR-3, and the time scale of the obtained voltage signal is found to be almost consistent with the experiments. Moreover, the time evolution of the voltage signal is connected with that of the spatial profile of the superconducting order parameter.

Original language	English
Pages (from-to)	58-63
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	151
Issue number	1-2 PART 1
DOIs	https://doi.org/10.1007/s10909-007-9613-5
Publication status	Published - 2008 Apr
Externally published	Yes

Keywords

Superconducting neutron detector

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1007/s10909-007-9613-5

Cite this

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title = "Direct numerical simulations for non-equilibrium superconducting dynamics at the transition edge: Simulation for MgB2 neutron detectors",

abstract = "We perform large-scale numerical simulations on the non-equilibrium superconducting dynamics after a neutron capture at the superconducting transition edge in MgB2 by solving the time-dependent Ginzburg-Landau equation coupled with the Maxwell and the heat diffusion equations. The simulations are carried out under the current-biased condition in order to explain experimental results made in the JAEA reactor JRR-3, and the time scale of the obtained voltage signal is found to be almost consistent with the experiments. Moreover, the time evolution of the voltage signal is connected with that of the spatial profile of the superconducting order parameter.",

keywords = "Superconducting neutron detector",

author = "Masahiko Machida and T. Kano and T. Koyama and M. Kato and T. Ishida",

note = "Funding Information: Acknowledgements This work was partially supported by CREST(JST) and by a Grant-in-Aid for Scientific Research from MEXT of Japan (Grant No. 19206104).",

year = "2008",

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doi = "10.1007/s10909-007-9613-5",

language = "English",

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T1 - Direct numerical simulations for non-equilibrium superconducting dynamics at the transition edge

T2 - Simulation for MgB2 neutron detectors

AU - Machida, Masahiko

AU - Kano, T.

AU - Koyama, T.

AU - Kato, M.

AU - Ishida, T.

N1 - Funding Information: Acknowledgements This work was partially supported by CREST(JST) and by a Grant-in-Aid for Scientific Research from MEXT of Japan (Grant No. 19206104).

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AB - We perform large-scale numerical simulations on the non-equilibrium superconducting dynamics after a neutron capture at the superconducting transition edge in MgB2 by solving the time-dependent Ginzburg-Landau equation coupled with the Maxwell and the heat diffusion equations. The simulations are carried out under the current-biased condition in order to explain experimental results made in the JAEA reactor JRR-3, and the time scale of the obtained voltage signal is found to be almost consistent with the experiments. Moreover, the time evolution of the voltage signal is connected with that of the spatial profile of the superconducting order parameter.

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