An ultra-fast superconducting Nb nanowire single-photon detector for soft X-rays

Autor:	Inderbitzin, Kevin, Engel, Andreas, Schilling, Andreas, Il'in, Konstantin, Siegel, Michael
Rok vydání:	2012
Předmět:	Condensed Matter - Superconductivity Condensed Matter - Mesoscale and Nanoscale Physics Physics - Instrumentation and Detectors
Zdroj:	Appl. Phys. Lett., vol 101, 162601 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4759046
Popis:	Although superconducting nanowire single-photon detectors (SNSPDs) are well studied regarding the detection of infrared/optical photons and keV-molecules, no studies on continuous X-ray photon counting by thick-film detectors have been reported so far. We fabricated a 100 nm thick niobium X-ray SNSPD (an X-SNSPD), and studied its detection capability of photons with keV-energies in continuous mode. The detector is capable to detect photons even at reduced bias currents of 0.4%, which is in sharp contrast to optical thin-film SNSPDs. No dark counts were recorded in extended measurement periods. Strikingly, the signal amplitude distribution depends significantly on the photon energy spectrum. Comment: 13 pages incl. 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1208.1656 Zobrazit plný text záznamu View this record from Arxiv