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We report an experimental investigation on the Doppler-free saturated absorption spectroscopy of buffer-gas-cooled Barium monofluoride (BaF) molecules in a 4~K cryogenic cell. The obtained spectra with a resolution of 19~MHz, much smaller…

Atomic Physics · Physics 2023-02-14 Wenhao Bu , Yuhe Zhang , Qian Liang , Tao Chen , Bo Yan

Monitored Drift Tube (MDT) chambers will constitute the large majority of precision detectors in the Muon Spectrometer of the ATLAS experiment at the Large Hadron Collider at CERN. For commissioning and calibration of MDT chambers, a Cosmic…

The movable temperature profiler is a 7 m vertical array of 24 sensors that measures cryogenic temperatures with a precision of a few mK. This precision is necessary to monitor the efficiency of re-circulation and purification of…

Instrumentation and Detectors · Physics 2020-12-22 R. Dharmapalan

We have developed a Lorentz angle measurement system for cool gas mixtures in the course of our R&D for a proposed JLC central drift chamber (JLC-CDC). The measurement system is characterized by the use of two laser beams to produce primary…

High Energy Physics - Experiment · Physics 2009-10-31 K. Hoshina , K. Fujii , N. Khalatyan , O. Nitoh , H. Okuno , Y. Kato , M. Kobayashi , Y. Kurihara , H. Kuroiwa , Y. Nakamura , K. Sakieda , Y. Suzuki , T. Watanabe

We have extended the range of the high-pressure optical spectroscopy to the far-infrared region keeping the accuracy of ambient-pressure experiments. The newly-developed method offers a powerful tool for the study of pressure-induced phase…

Strongly Correlated Electrons · Physics 2014-01-15 I. Kezsmarki , R. Gaal , C. C. Homes , B. Sipos , H. Berger , S. Bordacs , G. Mihaly , L. Forro

Two-phase Cryogenic Avalanche Detectors (CRADs) with combined THGEM/GAPD multiplier have become an emerging potential technique for dark matter search and coherent neutrino-nucleus scattering experiments. In such a multiplier the THGEM hole…

Instrumentation and Detectors · Physics 2015-05-15 A. Bondar , A. Buzulutskov , A. Dolgov , E. Shemyakina , A. Sokolov

The Eu{+2} spins S = 7/2 in the metallic compound EuCo{2-y}As2 order into an antiferromagnetic helical structure below a Neel temperature TN = 40 to 45 K. The effective magnetic moment mu_eff of the Eu spins in the paramagnetic state from…

Strongly Correlated Electrons · Physics 2018-12-18 N. S. Sangeetha , S. D. Cady , D. C. Johnston

We want to study the mid-infrared properties and the starburst and AGN contributions, of 24um sources at z~2, through analysis of mid-infrared spectra combined with millimeter, radio, and infrared photometry. Mid-infrared spectroscopy…

Although 2D solids and their vdW heterostructures have garnered much attention recently, their amorphous forms have been less explored. We present a detailed analysis of the structural, electronic, and thermal properties of 2D amorphous…

Materials Science · Physics 2023-05-16 Emel Gürbüz , Biplab Sanyal

The magnetic properties of alkali-metal peroxychromate K$_2$NaCrO$_8$ are governed by the $S = 1/2$ pentavalent chromium cation, Cr$^{5+}$. Specific heat, magnetocalorimetry, ac magnetic susceptibility, torque magnetometry, and inelastic…

In this work we investigated the longitudinal (zonal) variability of H$_2$O and ammonia (NH$_3$) hydrate ices on the surface of Charon through analysis of the 1.65 $\mu$m and 2.21 $\mu$m absorption features, respectively. Near-infrared…

Earth and Planetary Astrophysics · Physics 2016-12-21 Bryan J. Holler , Leslie A. Young , Marc W. Buie , William M. Grundy , James E. Lyke , Eliot F. Young , Henry G. Roe

Gotthard-II is a silicon microstrip detector developed for the European X-ray Free-Electron Laser (XFEL.EU). Its potential scientific applications include X-ray absorption/emission spectroscopy, hard X-ray high resolution single-shot…

According to the Mermin Wagner theorem, two-dimensional material is difficult to have the Curie temperature above room temperature. By using the method of band engineering, we design a promising two-dimensional ferromagnetic semiconductor…

Materials Science · Physics 2024-01-25 Xiao-Ping Wei , Lan-Lan Du , Jiang-Liu Meng , Xiaoma Tao

We present a continuous-filtering Vernier spectrometer operating in the 3.15-3.4 ${\mu}$m range, based on a femtosecond doubly resonant optical parametric oscillator, a cavity with a finesse of 340, a grating mounted on a galvo scanner and…

Instrumentation and Detectors · Physics 2018-05-04 Amir Khodabakhsh , Lucile Rutkowski , Jérôme Morville , Aleksandra Foltynowicz

This paper presents a compact low-temperature atomic vector magnetometer for weak field measurements, using an atomic cell containing two orthogonal multipass cavities. At the working temperature of 75 $^\circ$C, the magnetic field…

Atomic Physics · Physics 2023-03-09 Siqi Liu , Qianqian Yu , Hao Zhou , Dong Sheng

The MEG II experiment at Paul Scherrer Institut in Switzerland will search for the lepton flavour violating muon decay, $\mu^+\to e^+\gamma$, with a sensitivity of $4\times10^{-14}$ improving the existing limit of an order of magnitude. In…

We present a Faraday rotation spectroscopy (FRS) technique for measurements on the micron scale. Spectral acquisition speeds of many orders of magnitude faster than state-of-the-art modulation spectroscopy setups are demonstrated. The…

The ac electrical transport properties of polycrystalline Pr$_2$MgZrO$_6$ (PMZ) have been investigated using conductivity and impedance spectroscopic techniques. The crystal structure of PMZ has been determined to be monoclinic through a…

Materials Science · Physics 2023-07-26 Moumin Rudra , T. P. Sinha

Direct laser acceleration of electrons in near-critical-density (NCD) carbon nanotube foams (CNFs) has its advantages in the high-efficiency generation of relativistic electrons and broadband X-rays. Here, we report the first simultaneous…

NIKA 2 (New Instrument of Kids Array) is a next generation continuum and polarized instrument successfully installed in October 2015 at the IRAM 30 m telescope on Pico-Veleta (Granada, Spain). NIKA 2 is a high resolution dual-band camera,…