A composite bolometer as a charged-particle spectrometer

N. Coron, G. Dambier, G. J. Focker, P. G. Hansen, G. Jegoudez, B. Jonson, J. Leblanc, J. P. Moalic, H. L. Ravn, H. H. Stroke, O. Testard

    Research output: Contribution to journalArticle

    Abstract

    The measurement of radioactivity by direct conversion of nuclear radiation into a temperature rise of a calorimeter is as old as nuclear physics itself. As part of a general programme aiming at a determination of the mass of the electron neutrino, we have designed an improved version of a He-cooled composite diamond bolometer with a monolithic germanium thermistor, developed at the Laboratoire de Physique Stellaire et Planetaire (LPSP)1. Our approach, based on an idea by De Rujula2, is to study the shape, near the upper end-point of the internal bremsstrahlung spectrum in electron-capture β decay. The best nucleus for a precise measurement seems to be 163Ho, for which we have determined3 the QEC value to be 2.83±0.05 keV. A particularly interesting possibility is to use total absorption spectrometry4 (calorimetry), in which the radioactive holmium forms part of the sensitive volume of the detector. With 5-6-MeV α particles impinging on the diamond wafer of the bolometer, a full-width-at-half-maximum (FWHM) of 36 keV was obtained at a temperature of 1.3 K. The theoretical resolution at 100 mK is a few electron-volts, so this new detection technique should give greatly enhanced energy resolution compared with present solid-state conductors based on charge carrier collection.

    Original languageEnglish (US)
    Pages (from-to)75-76
    Number of pages2
    JournalNature
    Volume314
    Issue number6006
    DOIs
    StatePublished - 1985

    Fingerprint

    bolometers
    charged particles
    spectrometers
    composite materials
    diamonds
    nuclear radiation
    thermistors
    holmium
    nuclear physics
    radioactivity
    electron capture
    bremsstrahlung
    calorimeters
    charge carriers
    germanium
    electrons
    heat measurement
    neutrinos
    conductors
    wafers

    ASJC Scopus subject areas

    • General

    Cite this

    Coron, N., Dambier, G., Focker, G. J., Hansen, P. G., Jegoudez, G., Jonson, B., ... Testard, O. (1985). A composite bolometer as a charged-particle spectrometer. Nature, 314(6006), 75-76. https://doi.org/10.1038/314075a0

    A composite bolometer as a charged-particle spectrometer. / Coron, N.; Dambier, G.; Focker, G. J.; Hansen, P. G.; Jegoudez, G.; Jonson, B.; Leblanc, J.; Moalic, J. P.; Ravn, H. L.; Stroke, H. H.; Testard, O.

    In: Nature, Vol. 314, No. 6006, 1985, p. 75-76.

    Research output: Contribution to journalArticle

    Coron, N, Dambier, G, Focker, GJ, Hansen, PG, Jegoudez, G, Jonson, B, Leblanc, J, Moalic, JP, Ravn, HL, Stroke, HH & Testard, O 1985, 'A composite bolometer as a charged-particle spectrometer', Nature, vol. 314, no. 6006, pp. 75-76. https://doi.org/10.1038/314075a0
    Coron N, Dambier G, Focker GJ, Hansen PG, Jegoudez G, Jonson B et al. A composite bolometer as a charged-particle spectrometer. Nature. 1985;314(6006):75-76. https://doi.org/10.1038/314075a0
    Coron, N. ; Dambier, G. ; Focker, G. J. ; Hansen, P. G. ; Jegoudez, G. ; Jonson, B. ; Leblanc, J. ; Moalic, J. P. ; Ravn, H. L. ; Stroke, H. H. ; Testard, O. / A composite bolometer as a charged-particle spectrometer. In: Nature. 1985 ; Vol. 314, No. 6006. pp. 75-76.
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