Characterization of a 2 g LiF bolometer

Marcillac, P. de; Coron, N.; Leblanc, J.; Bobin, Christophe; Berkes, István; Jésus, M. de; Hadjout, J. P.; Gonzalez‐Mestres, Luis; Zhou, Jibo

doi:10.1016/0168-9002(93)91140-i

Cited by 26 publications

(10 citation statements)

References 9 publications

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“…De Marcillac et al [23], reports the detection of alpha particles from a variety of sources (these are used because their range in LiF is only an order of magnitude smaller than the range of thermal neutrons) and from thermal neutron capture in a 2-gram LiF crystal held at 80 mK. Temperature was sensed with thermistors, and the authors report 16 keV resolution at 4.8 MeV deposited energy.…”

Section: Cryogenic Detectorsmentioning

confidence: 99%

Neutron detection with cryogenics and semiconductors

Bell

Carpenter

Cristy

et al. 2005

phys. stat. sol. (c)

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PACS 29.30.Hs, 29.40.Vj, 29.40.Wk The common methods of neutron detection are reviewed with special attention paid to the application of cryogenics and semiconductors to the problem. The authors' work with LiF-and boron-based cryogenic instruments is described as well as the use of CdTe and HgI 2 for direct detection of neutrons. 1 Introduction Advances in materials and methods have enabled the detection of radiation by means today that would have seemed, to pioneers in the field a century ago, like science fiction. Improvements in technology have resulted, for gamma ray detection, in high-purity germanium operating at 77 K and providing 0.1% energy resolution above 1 MeV, more than an order of magnitude improvement over what was (and still is) achievable by scintillators. However, operating below 1 K, cryogenic calorimeters have been used in X-ray astronomy, in the search for dark matter, and more recently in gamma ray spectroscopy, and have achieved better than 70 eV resolution at 60 keV [1], a factor of 4 to 5 improvement over what can be achieved by germanium at that energy. Meanwhile, at the other end of the temperature spectrum, the development of new, wide band-gap semiconductors has sparked research in room temperature gamma ray detectors and has held out the hope of 1 -2% resolution and freedom from cryogenics [2,3].With such results being reported from the X-and gamma ray world it is natural to examine the possibilities for neutron detection. A cryogenic neutron detector would operate by detecting the heat pulses caused by neutron capture and scattering, while a semiconducting detector would detect the nuclear reaction products from a sensitizer (for example, fission fragments detected in a 235 U-coated Si diode) or from some constituent of the semiconductor.In the following sections, the common methods of neutron detection are described and their deficiencies with respect to neutron spectroscopy at energies above thermal (0.025 eV) are outlined. Published work on neutron-detecting cryogenic calorimeters will be reviewed and work by the present authors on boron-and lithium-based instruments will be discussed. Turning to semiconductors, we review work with coated and native (uncoated) semiconductor, including Cd 1-x Zn x Te (CZT) and HgI 2 , as applied to neutron detection. Results obtained by the authors with HgI 2 will be shown.

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Section: Cryogenic Detectorsmentioning

confidence: 99%

Neutron detection with cryogenics and semiconductors

Bell

Carpenter

Cristy

et al. 2005

phys. stat. sol. (c)

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“…Peaks, approximately in the ratio of 16:1, corresponding to the ground state and first excited state of 7 Li were observed in the spectrum at 2.31 and 2.8 MeV deposited energy. Fitting the initial unfiltered data determined the FWHM to be 15 keV.…”

Section: Resultsmentioning

confidence: 94%

“…Silver [2] reports the fabrication of a 6 LiF spectrometer operating at 328 mK and achieving a resolution of 39 keV. De Marcillac [7] reports the fabrication of a spectrometer operating at 80 mK and achieving 16 keV resolution when bombarded with 5 MeV alpha particles.…”

Section: Introductionmentioning

confidence: 99%

Neutron Detection with a Cryogenic Spectrometer

Bell¹,

Lamberti²,

Carpenter³

et al. 2003

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“…[49] For this, experiments have been done with a fairly heavy (2g) LiF bolometer; the use of a sample enriched in 6 Li is expected to enhance the efficiency. Discrimination between thermal pulses produced by different types of incident particles (α, γ) has been demonstrated [50]: this is achieved by a novel combination of the calorimeter and an optical link with use of a luminescent CaF 2 (Eu) bolometer.…”

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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Characterization of a 2 g LiF bolometer

Cited by 26 publications

References 9 publications

Neutron detection with cryogenics and semiconductors

Neutron detection with cryogenics and semiconductors

Neutron Detection with a Cryogenic Spectrometer

Neutrino mass and low-temperature calorimetry

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