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Efficient single particle detection with a superconducting nanowire

Mon, 2013-02-11 18:02 - Daniel Rudolph
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Date: 
2012-07-24
Author(s): 

H. Azzouz, S. N. Dorenbos, D. De Vries, E. Bermúdez Ureña, and V. Zwiller

Reference: 

AIP Advances 2, 032124 (2012)

URL: 

http://dx.doi.org/10.1063/1.4740074

Detection of α- and β-particles is of paramount importance in a wide range of applications. Current particle detectors are all macroscopic and have limited time resolution. We demonstrate a nanoscale particle detector with a small detection volume, high detection efficiency, short dead times and low dark count levels. We measure α- and β-particle detection efficiencies close to unity using different sources and also demonstrate blindness towards γ-rays. Our nanoscale detector offers particle detection measurements with unprecendented spatial resolution.