High temperature gas proportional detector techniques and application to the neutrino mass limit using 163Ho

Hartmann, F.; Naumann, R.A.

doi:10.1016/0168-9002(92)90102-a

Cited by 23 publications

(29 citation statements)

References 15 publications

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“…This has to be compared to the fraction of the β-spectrum which contains the information on the neutrino mass. Even for the lowest known endpoint energy of 187 Re with E 0 = 2.47 keV, the relative fraction of 187 Re β-decay events in the last eV below E 0 is of order 10 −11 only (compare to Figure 3). Therefore arrays of many bolometers are required to reach a high sensitivity on the neutrino mass.…”

Section: Cryo-bolometersmentioning

confidence: 96%

“…The isotope 187 Re exhibits the lowest endpoint energy with E 0 = 2.47 keV of all known β-emitters decaying to the ground-state of the daughter nucleus 5 . The ground state of the mother isotope 187 Re has spin and parity J π = 5/2 + . The β-decay goes to the ground state of the daughter 187 Os with spin and parity J π = 1/2 − .…”

Section: Forbidden Transitions Like 187 Rementioning

confidence: 99%

“…The ground state of the mother isotope 187 Re has spin and parity J π = 5/2 + . The β-decay goes to the ground state of the daughter 187 Os with spin and parity J π = 1/2 − . Therefore, the decay is a first unique forbidden transition.…”

Section: Forbidden Transitions Like 187 Rementioning

confidence: 99%

“…On the other hand, Springer et al made use of the inner Bremsstrahlung method to obtain an upper limit of m(ν e ) < 225 eV at 95% CL [47]. First measurements of the calorimetric 163 Ho EC spectrum [186,187,188] have not yet achieved sufficient sensitivity to improve on the above mentioned limits due to limitations in energy resolution and statistics of the measurements. A very recent measurement of the calorimetric de-excitation spectrum using Metallic Magnetic Calorimeters (see section 5.4) reached a high energy resolution of 12 eV FWHM [177], but was hampered by a background of EC decays from 144 Pm that contaminated the detector during the 163 Ho implantation process.…”

Section: Electron Capture On 163 Homentioning

confidence: 99%

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Current Direct Neutrino Mass Experiments

Drexlin

Hannen

Mertens

et al. 2013

Advances in High Energy Physics

288

304

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In this contribution we review the status and perspectives of direct neutrino mass experiments. These experiments investigate the kinematics of β-decays of specific isotopes ( 3 H, 187 Re, 163 Ho) to derive model-independent information on the averaged electron (anti-) neutrino mass, which is formed by the incoherent sum of the neutrino mass eigenstates contributing to the electron neutrino. We first review the kinematics of β-decay and the determination of the neutrino mass, before giving a brief overview of past neutrino mass measurements (SN1987a-ToF studies, Mainz and Troitsk experiments for 3 H, cryo-bolometers for 187 Re). We then describe the Karlsruhe Tritium Neutrino (KATRIN) experiment which is currently under construction at Karlsruhe Institute of Technology. The large-scale setup will use the MAC-E-Filter principle pioneered earlier to push the sensitivity down to a value of 200 meV (90% C.L.). KATRIN faces many technological challenges that have to be resolved with regard to source intensity and stability, as well as precision energy analysis and low background rate close to the kinematic endpoint of tritium β-decay at 18.6 keV. We then review new experimental approaches such as the MARE, ECHO and Project8 experiments, which offer the promise to perform an independent measurement of the neutrino mass in the sub-eV region. This variety of methods and the novel technologies developed in all present and future experiments demonstrate the great potential of direct neutrino mass experiments in providing vital information on the absolute mass scale of neutrinos.

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Section: Cryo-bolometersmentioning

confidence: 96%

Section: Forbidden Transitions Like 187 Rementioning

confidence: 99%

Section: Forbidden Transitions Like 187 Rementioning

confidence: 99%

Section: Electron Capture On 163 Homentioning

confidence: 99%

See 2 more Smart Citations

Current Direct Neutrino Mass Experiments

Drexlin

Hannen

Mertens

et al. 2013

Advances in High Energy Physics

288

304

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“…A second calorimetric spectrum of 163 Ho was measured by the Princeton group [8]. They used a gas proportional counter in which the 163 Ho ions where bound in the volatile compound Ho(fod) 3 (holmium tris 6,6,7,7,8,8,8-heptafluor-2,2-dimethyloctan-3,5-dionato-O,O). A third measurement, the first using a low temperature micro-calorimeter, was performed by the Genova group [9].…”

Section: Introductionmentioning

confidence: 99%

163Ho based experiments

Gastaldo¹

2015

AIP Conference Proceedings

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Abstract. The analysis of the endpoint region of the calorimetrically measured 163 Ho electron capture spectrum is a very promising way to determine the mass of the electron neutrino. The achievable sensitivity of 163 Ho-based experiments and the experimental challenges will be presented. Three large collaborations aim at developing large scale experiments able to reach sub-eV sensitivity. Presently pilot experiments are performed to demonstrate the possibility to calorimetrically measure high precision and high statistics 163 Ho spectra. The different approaches as well as the state of the art of the experimental efforts for the three collaborations will be discussed.

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Scintillating Oils and Compatible Materials for Next Generation of Electron Anti-neutrino Detectors, After Double Chooz

Lasserre

Neutrino Geophysics: Proceedings of Neutrino Sciences 2005

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High temperature gas proportional detector techniques and application to the neutrino mass limit using 163Ho

Cited by 23 publications

References 15 publications

Current Direct Neutrino Mass Experiments

Current Direct Neutrino Mass Experiments

163Ho based experiments

Scintillating Oils and Compatible Materials for Next Generation of Electron Anti-neutrino Detectors, After Double Chooz

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