Detection of single x-ray photons by an annular superconducting tunnel junction

Frunzio, Luigi; Li, L.; Prober, D. E.; Vernik, Igor V.; Lisitskii, M. P.; Nappi, C.; Cristiano, R.

doi:10.1063/1.1405425

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…Earlier, we observed current pulses from a Nb-based annular junction with one trapped flux quantum under 6 keV x-ray irradiation. 8 Unfortunately, a significant energy spectrum could not be collected because of the low quality of the Nb junction, the presence of the SiO 2 insulation layer, and the thin-film magnetic coil above the STJ which deteriorated the spectrum in the same way as in Ref.…”

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confidence: 95%

X-ray energy spectrum measurements by an annular superconducting tunnel junction with trapped magnetic flux quanta

Lisitskiy

Nappi

Ejrnæs

et al. 2004

Applied Physics Letters

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We report on the Fe55 x-ray pulse height spectrum of an annular superconducting tunnel junction (STJ) collected without an external magnetic field. An energy resolution of 100eV was obtained for the Kα line of the top electrode. The Josephson critical current and Fiske resonances were suppressed by the presence of trapped magnetic flux quanta which created a persistent current and self-generated magnetic field. The obtained energy resolution and the stability of the trapped magnetic flux under irradiation demonstrate the capability of an annular STJ device with trapped flux quanta to detect radiation without using the external magnetic field that is required in the conventional detection scheme.

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mentioning

confidence: 95%

X-ray energy spectrum measurements by an annular superconducting tunnel junction with trapped magnetic flux quanta

Lisitskiy

Nappi

Ejrnæs

et al. 2004

Applied Physics Letters

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“…Several groups (Gulakov and Zenevich 2001, Kardynal 2001, Braem et al 2002, Frunzio et al 2001 have studied single-photon detection systems outside the medical imaging field. In this paper, first photon detection (FPD) as applied to a diagnostic TI system as shown in figure 2 is investigated.…”

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confidence: 99%

First photon detection in time-resolved transillumination imaging: a theoretical evaluation

2004

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First photon detection, as a special case of time-resolved transillumination imaging, is studied through the derivation of the temporal probability density function (pdf) for the first arriving photon. The pdf for different laser intensities, media and second and later arriving photons were generated. The arrival time of the first detected photon reduced as the laser power increased and also when the scattering and absorption coefficients decreased. The pdf for an imbedded totally absorbing 3 mm inhomogeneity may be distinguished from the pdf of a homogeneous turbid medium similar to that of human breast in dimensions and optical properties.

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Annular superconducting tunnel junction with injected current as a new configuration of radiation detector

Lissitski

Ejrnæs

Nappi

et al. 2004

Nuclear Instruments and Methods in Physics Research Section A:

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Detection of single x-ray photons by an annular superconducting tunnel junction

Abstract: Articles you may be interested in X-ray energy spectrum measurements by an annular superconducting tunnel junction with trapped magnetic flux quanta Appl.

Cited by 8 publications

References 16 publications

X-ray energy spectrum measurements by an annular superconducting tunnel junction with trapped magnetic flux quanta

X-ray energy spectrum measurements by an annular superconducting tunnel junction with trapped magnetic flux quanta

First photon detection in time-resolved transillumination imaging: a theoretical evaluation

Annular superconducting tunnel junction with injected current as a new configuration of radiation detector

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