Spatially resolved study of superconducting tunnel junctions X-ray detectors by low temperature scanning synchrotron microscopy

Harald Pressler; Masataka Ohkubo; Masaki Koike; Tatsuya Zama; Daiji Fukuda; Naoto Kobayashi

doi:10.1109/77.919440

Spatially resolved study of superconducting tunnel junctions X-ray detectors by low temperature scanning synchrotron microscopy

Harald Pressler, Masataka Ohkubo, Masaki Koike, Tatsuya Zama, Daiji Fukuda, Naoto Kobayashi

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

6 Citations (Scopus)

Abstract

A low temperature scanning synchrotron microscope (LTSSM) has been developed for spatial analysis of superconducting tunnel junction X-ray detectors. One and two-dimensional images of the detector response to X-rays were measured by scanning the junctions kept at a working temperature of about 0.4 K with a highly collimated synchrotron radiation beam. The collimation was performed by inserting a pinhole mounted on a scanning unit into the synchrotron radiation in the range of 3-6 keV. The spatial resolution of the LTSSM is between 5 and 10 micrometer. The present results indicate a large discrepancy between the experimental spatial response and a quasiparticle diffusion and edge-loss model. The LTSSM plays an important role in the development of cryogenic X-ray detectors.

Original language	English
Pages (from-to)	696-699
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1 I
DOIs	https://doi.org/10.1109/77.919440
Publication status	Published - 2001 Mar
Externally published	Yes

Keywords

Image processing
Superconducting devices
Superconducting tunnel junctions
X-ray detectors

ASJC Scopus subject areas

Electrical and Electronic Engineering
Physics and Astronomy (miscellaneous)

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Spatially resolved study of superconducting tunnel junctions X-ray detectors by low temperature scanning synchrotron microscopy. / Pressler, Harald; Ohkubo, Masataka; Koike, Masaki; Zama, Tatsuya; Fukuda, Daiji; Kobayashi, Naoto.

In: IEEE Transactions on Applied Superconductivity, Vol. 11, No. 1 I, 03.2001, p. 696-699.

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

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