Advanced x-ray detectors for the analysis of materials

Lesyna, L.; Marzio, D. Di; Gottesman, Stephen R.; Kesselman, Martin

doi:10.1007/bf00693512

Cited by 14 publications

(6 citation statements)

References 3 publications

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“…8 Energy dispersive spectrometry ͑EDS͒ is typically limited to a 150 eV resolution and a 20 kHz count rate for 6 keV x rays. The minimum detectability limit goes as the square root of the ratio of the energy resolution to the count rate.…”

Section: ͑3͒mentioning

confidence: 99%

An application of electrothermal feedback for high resolution cryogenic particle detection

Irwin¹

1995

Applied Physics Letters

662

466

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A novel type of superconducting transition edge sensor is proposed. In this sensor, the temperature of a superconducting film is held constant by feeding back to its position on the resistive transition edge. Energy deposited in the film is measured by a reduction in the feedback Joule heating. This mode of operation should lead to substantial improvements in resolution, linearity, dynamic range, and count rate. Fundamental resolution limits are below ΔE=√kT2C, which is sometimes incorrectly referred to as the thermodynamic limit. This performance is better than any existing technology operating at the same temperature, count rate, and absorber heat capacity. Applications include high resolution x-ray spectrometry, dark matter searches, and neutrino detection.

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Section: ͑3͒mentioning

confidence: 99%

An application of electrothermal feedback for high resolution cryogenic particle detection

Irwin¹

1995

Applied Physics Letters

662

466

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“…There is an obvious need for new generations of X-ray spectrometers for microanalysis that combine the excellent energy resolution of WD spectrometers with the parallel energy detection capability of semiconductor ED spectrometers. Recently, high-energy-resolution X-ray microcalorimeter spectrometers for improved EDS X-ray microanalysis have been proposed (Lesyna et al, 1993;Nahum & Martinis, 1995;Silver et al, 1996) and demonstrated Wollman et al, 1996;Silver et al, 1997;Wollman et al, 1997a).…”

Section: Introductionmentioning

confidence: 99%

High‐resolution, energy‐dispersive microcalorimeter spectrometer for X‐ray microanalysis

Wollman

Irwin

Hilton

et al. 1997

Journal of Microscopy

240

121

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SummaryWe have developed a prototype X-ray microcalorimeter spectrometer with high energy resolution for use in X-ray microanalysis. The microcalorimeter spectrometer system consists of a superconducting transition-edge sensor X-ray microcalorimeter cooled to an operating temperature near 100 mK by a compact adiabatic demagnetization refrigerator, a superconducting quantum interference device current amplifier followed by pulse-shaping amplifiers and pileup rejection circuitry, and a multichannel analyser with computer interface for the real-time acquisition of X-ray spectra. With the spectrometer mounted on a scanning electron microscope, we have achieved an instrument response energy resolution of better than 10 eV full width at half-maximum (FWHM) over a broad energy range at real-time output count rates up to 150 s ¹1. Careful analysis of digitized X-ray pulses yields an instrument-response energy resolution of 7 . 2 Ϯ 0 . 4 eV FWHM at 5 . 89 keV for Mn Ka 1,2 X-rays from a radioactive 55 Fe source, the best reported energy resolution for any energy-dispersive detector.

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“…This has been used to obtain the heat capacity of silicon at low temperatures. [45] The greater spectral resolution and efficiency of low temperature calorimeters, when compared with the more conventional solid state detectors [46], are to be exploited at the Gesellschaft für Schwerionenforschung (GSI) facility in Darmstadt (Germany) for precision Lamb-shift measurements. [47] For hydrogen-like lead and uranium (atomic numbers Z=82 and 92), the principal quantum number n=2 and 1 levels are separated by ≈ 100 keV, the n=2 fine structure ≈ 4.6 keV, and the Lamb shifts are 458 eV and 75 eV for the 1s and 2s electrons.…”

Section: Resultsmentioning

confidence: 99%

Neutrino mass and low-temperature calorimetry

Wang

Zhou

Redi

et al. 1998

American Journal of Physics

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We describe how the problem of measuring the neutrino mass led us to the development of low-temperature calorimetry. The search for a "17-keV neutrino" concluded with a negative result, but a wide range of applications are now carried on by us and by other groups in the fields of x-ray astronomy, recoil measurements of dark matter particles, high precision particle spectrometry, specific heat determinations, neutron detection, rare decay studies. The masses of the bolometers (calorimeters) extend from 1 mg to 1 Kg, nearly as large as for quantum detectors. By lowering the temperature into the 10-20 mK range, calorimetry is on the way to surpass substantially the high precision of particle metrology obtainable with the quantum detectors. Calorimeter developments and perspectives are discussed.

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Advanced x-ray detectors for the analysis of materials

Cited by 14 publications

References 3 publications

An application of electrothermal feedback for high resolution cryogenic particle detection

An application of electrothermal feedback for high resolution cryogenic particle detection

High‐resolution, energy‐dispersive microcalorimeter spectrometer for X‐ray microanalysis

Neutrino mass and low-temperature calorimetry

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