TY - JOUR AU - Inderbitzin, K. AU - Engel, A. AU - Schilling, A. AU - Il'in, K. AU - Siegel, M. PY - 2012 DA - 2012// TI - An ultra-fast superconducting Nb nanowire single-photon detector for soft x-rays T2 - Appl. Phys. Lett. VL - 101 KW - SSPD KW - SNSPD KW - x-ray KW - Nb AB - Although superconducting nanowire single-photon detectors (SNSPDs) are well studied regarding thedetection of infrared/optical photons and keV-molecules, no studies on continuous x-ray photoncounting by thick-film detectors have been reported so far. We fabricated a 100 nm thick niobiumx-ray SNSPD (an X-SNSPD) and studied its detection capability of photons with keV-energies incontinuous 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 extendedmeasurement periods. Strikingly, the signal amplitude distribution depends significantly on the photonenergy spectrum.VC N1 - exported from refbase (https://db.rplab.ru/refbase/show.php?record=878), last updated on Tue, 30 Oct 2012 16:06:57 -0500 ID - Inderbitzin_etal2012 ER -