10 Result(s)

Article

Observation of time-dependent internal charge amplification in a planar germanium detector at cryogenic temperature

For the first time, time-dependent internal charge amplification through impact ionization has been observed in a planar germanium (Ge) detector operated at cryogenic temperature. In a time period of 30 and 45...

P. Acharya, M. Fritts, D.-M. Mei, V. Mandic, C.-J. Wang… in The European Physical Journal C (2023)

Article

Erratum to: The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

D. S. Akerib, C. W. Akerlof, D. Yu. Akimov… in The European Physical Journal C (2022)

Article

Development of planar P-type point contact germanium detectors for low-mass dark matter searches

The detection of low-energy deposition in the range of sub-eV through ionization using germanium (Ge) with a bandgap of \(\sim \) ...

W.-Z. Wei, H. Mei, K. Kooi, D.-M. Mei, J. Liu, J.-C. Li… in The European Physical Journal C (2022)

Article

The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMP-nucleon scattering sensitivity above $${1.4 \t...

D. S. Akerib, C. W. Akerlof, D. Yu. Akimov… in The European Physical Journal C (2020)

Article

Investigation of the electrical conduction mechanisms in P-type amorphous germanium electrical contacts for germanium detectors in searching for rare-event physics

For the first time, electrical conduction mechanisms in the disordered material system is experimentally studied for p-type amorphous germanium (a-Ge) used for high-purity Ge detector contacts. The localizatio...

S. Bhattarai, R. Panth, W.-Z. Wei, H. Mei, D.-M. Mei… in The European Physical Journal C (2020)

Article

Characterization of high-purity germanium detectors with amorphous germanium contacts in cryogenic liquids

For the first time, planar high-purity germanium detectors with thin amorphous germanium contacts were successfully operated directly in liquid nitrogen and liquid argon in a cryostat at the Max-Planck-Institu...

R. Panth, J. Liu, I. Abt, X. Liu, O. Schulz, W.-Z. Wei… in The European Physical Journal C (2020)

Article

The impact of the charge barrier height on Germanium (Ge) detectors with amorphous-Ge contacts for light dark matter searches

Germanium (Ge) detectors with ability of measuring a single electron–hole (e–h) pair are needed in searching for light dark matter (LDM) down to the MeV scale. We investigate the feasibility of Ge detectors wi...

W.-Z. Wei, R. Panth, J. Liu, H. Mei, D.-M. Mei… in The European Physical Journal C (2020)

Article

Atmospheric charged \(K/\pi \) ratio and measurement of muon annual modulation with a liquid scintillation detector at Soudan

We report a measurement of muon annual modulation in a 12-l liquid scintillation detector with a live-time of more than 4 years at the Soudan Underground Laboratory. Muon minimum ionization in the detector is ...

C. Zhang, D.-M. Mei in The European Physical Journal C (2019)

Article

Direct detection of MeV-scale dark matter utilizing germanium internal amplification for the charge created by the ionization of impurities

Light, MeV-scale dark matter (DM) is an exciting DM candidate that is undetectable by current experiments. A germanium (Ge) detector utilizing internal charge amplification for the charge carriers created by t...

D.-M. Mei, G.-J. Wang, H. Mei, G. Yang, J. Liu… in The European Physical Journal C (2018)