BOLOMETERS AS SPECTROMETERS FOR X-RAY ASTRONOMY.

N. Coron, G. Artzner, G. Dambier, G. Jegoudez, J. Leblanc, J. Y. Deschamps, R. Rocchia, A. Tarrius, O. Testard, H. R. Ravn, H. H. Stroke, B. Jonson

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We have investigated the possibility to use composite diamond-germanium bolometers, originally developed for I. R. astronomy, for the individual detection of X-ray photons. The advantage of a composite bolometer is that it separates the absorption and detection functions. Diamond, as absorber, is especially interesting because of its high-thermal diffusivity and low heat capacity. The thermalization time of the whole device for a 1 multiplied by 1 mm**2 absorber is less than 50 mu s and allows the detection of a few tens or hundreds counts per second without degradation of the spectral resolution. The theoretical energy resolution DELTA E//f//w//h//m is proportional to T C1/2 where C, the specific heat of the bolometer, is a rapidly decreasing function of the temperature T. The expected value of DELTA E is less than 10eV at 0. 1 degree K. Associated with a 10**3 cm**2 telescope such a device, whose performance is essentially signal limited, is able to detect an emission line of 10** minus **7 ph. cm** minus **2 s** minus **1 in 10**5 seconds in the spectrum of a faint X-ray source.

    Original languageEnglish (US)
    Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
    EditorsNorman Longdon, Olga Melita
    PublisherESA, Publ Div
    Pages229-231
    Number of pages3
    StatePublished - 1985

    Fingerprint

    Bolometers
    Astronomy
    Spectrometers
    X rays
    Specific heat
    Diamonds
    Thermal diffusivity
    Spectral resolution
    Optical resolving power
    Composite materials
    Germanium
    Telescopes
    Photons
    Degradation
    Temperature

    ASJC Scopus subject areas

    • Aerospace Engineering

    Cite this

    Coron, N., Artzner, G., Dambier, G., Jegoudez, G., Leblanc, J., Deschamps, J. Y., ... Jonson, B. (1985). BOLOMETERS AS SPECTROMETERS FOR X-RAY ASTRONOMY. In N. Longdon, & O. Melita (Eds.), European Space Agency, (Special Publication) ESA SP (pp. 229-231). ESA, Publ Div.

    BOLOMETERS AS SPECTROMETERS FOR X-RAY ASTRONOMY. / Coron, N.; Artzner, G.; Dambier, G.; Jegoudez, G.; Leblanc, J.; Deschamps, J. Y.; Rocchia, R.; Tarrius, A.; Testard, O.; Ravn, H. R.; Stroke, H. H.; Jonson, B.

    European Space Agency, (Special Publication) ESA SP. ed. / Norman Longdon; Olga Melita. ESA, Publ Div, 1985. p. 229-231.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Coron, N, Artzner, G, Dambier, G, Jegoudez, G, Leblanc, J, Deschamps, JY, Rocchia, R, Tarrius, A, Testard, O, Ravn, HR, Stroke, HH & Jonson, B 1985, BOLOMETERS AS SPECTROMETERS FOR X-RAY ASTRONOMY. in N Longdon & O Melita (eds), European Space Agency, (Special Publication) ESA SP. ESA, Publ Div, pp. 229-231.
    Coron N, Artzner G, Dambier G, Jegoudez G, Leblanc J, Deschamps JY et al. BOLOMETERS AS SPECTROMETERS FOR X-RAY ASTRONOMY. In Longdon N, Melita O, editors, European Space Agency, (Special Publication) ESA SP. ESA, Publ Div. 1985. p. 229-231
    Coron, N. ; Artzner, G. ; Dambier, G. ; Jegoudez, G. ; Leblanc, J. ; Deschamps, J. Y. ; Rocchia, R. ; Tarrius, A. ; Testard, O. ; Ravn, H. R. ; Stroke, H. H. ; Jonson, B. / BOLOMETERS AS SPECTROMETERS FOR X-RAY ASTRONOMY. European Space Agency, (Special Publication) ESA SP. editor / Norman Longdon ; Olga Melita. ESA, Publ Div, 1985. pp. 229-231
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    abstract = "We have investigated the possibility to use composite diamond-germanium bolometers, originally developed for I. R. astronomy, for the individual detection of X-ray photons. The advantage of a composite bolometer is that it separates the absorption and detection functions. Diamond, as absorber, is especially interesting because of its high-thermal diffusivity and low heat capacity. The thermalization time of the whole device for a 1 multiplied by 1 mm**2 absorber is less than 50 mu s and allows the detection of a few tens or hundreds counts per second without degradation of the spectral resolution. The theoretical energy resolution DELTA E//f//w//h//m is proportional to T C1/2 where C, the specific heat of the bolometer, is a rapidly decreasing function of the temperature T. The expected value of DELTA E is less than 10eV at 0. 1 degree K. Associated with a 10**3 cm**2 telescope such a device, whose performance is essentially signal limited, is able to detect an emission line of 10** minus **7 ph. cm** minus **2 s** minus **1 in 10**5 seconds in the spectrum of a faint X-ray source.",
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    AU - Artzner, G.

    AU - Dambier, G.

    AU - Jegoudez, G.

    AU - Leblanc, J.

    AU - Deschamps, J. Y.

    AU - Rocchia, R.

    AU - Tarrius, A.

    AU - Testard, O.

    AU - Ravn, H. R.

    AU - Stroke, H. H.

    AU - Jonson, B.

    PY - 1985

    Y1 - 1985

    N2 - We have investigated the possibility to use composite diamond-germanium bolometers, originally developed for I. R. astronomy, for the individual detection of X-ray photons. The advantage of a composite bolometer is that it separates the absorption and detection functions. Diamond, as absorber, is especially interesting because of its high-thermal diffusivity and low heat capacity. The thermalization time of the whole device for a 1 multiplied by 1 mm**2 absorber is less than 50 mu s and allows the detection of a few tens or hundreds counts per second without degradation of the spectral resolution. The theoretical energy resolution DELTA E//f//w//h//m is proportional to T C1/2 where C, the specific heat of the bolometer, is a rapidly decreasing function of the temperature T. The expected value of DELTA E is less than 10eV at 0. 1 degree K. Associated with a 10**3 cm**2 telescope such a device, whose performance is essentially signal limited, is able to detect an emission line of 10** minus **7 ph. cm** minus **2 s** minus **1 in 10**5 seconds in the spectrum of a faint X-ray source.

    AB - We have investigated the possibility to use composite diamond-germanium bolometers, originally developed for I. R. astronomy, for the individual detection of X-ray photons. The advantage of a composite bolometer is that it separates the absorption and detection functions. Diamond, as absorber, is especially interesting because of its high-thermal diffusivity and low heat capacity. The thermalization time of the whole device for a 1 multiplied by 1 mm**2 absorber is less than 50 mu s and allows the detection of a few tens or hundreds counts per second without degradation of the spectral resolution. The theoretical energy resolution DELTA E//f//w//h//m is proportional to T C1/2 where C, the specific heat of the bolometer, is a rapidly decreasing function of the temperature T. The expected value of DELTA E is less than 10eV at 0. 1 degree K. Associated with a 10**3 cm**2 telescope such a device, whose performance is essentially signal limited, is able to detect an emission line of 10** minus **7 ph. cm** minus **2 s** minus **1 in 10**5 seconds in the spectrum of a faint X-ray source.

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