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We have characterized two state-of-the-art solid-state photomultipliers, one by SensL, the other by Hamamatsu, coupled to scintillators by Saint-Gobain Crystals in the -25 to 50 degrees C temperature range. At room temperature, the energy…

Instrumentation and Detectors · Physics 2011-03-28 Clarisse Tur , Vladimir Solovyev , Jeremy Flamanc

Vacuum ultraviolet light sensitive photomultiplier tubes directly coupled to liquid xenon are being used to efficiently detect the 178 nm scintillation light in a variety of liquid xenon based particle detectors. Good knowledge of the…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 E. Aprile , M. Beck , K. Bokeloh , R. Budnik , B. Choi , H. A. Contreras , K. -L. Giboni , L. W. Goetzke , R. F. Lang , K. E. Lim , A. J. Melgarejo Fernandez , G. Plante , A. Rizzo , P. Shagin , C. Weinheimer

We study the temperature dependence of the Rashba-split bands in the bismuth tellurohalides BiTe$X$ $(X=$ I, Br, Cl) from first principles. We find that increasing temperature reduces the Rashba splitting, with the largest effect observed…

Materials Science · Physics 2017-10-18 Bartomeu Monserrat , David Vanderbilt

New CCD three colors light curves of TY Boo were carried out in five nights from February to May 2006 in BVR bandpass using a 50-cm F/8.4 Ritchey Chretien telescope (Ba50) of the Baja Astronomical Observatory (Hungary), and 512*512 Apogee…

Solar and Stellar Astrophysics · Physics 2015-06-19 M. M. Elkhateeb , M. I. Nouh , A. S. Saad

The temperature dependence of the thermal boundary resistivity is investigated in glass-embedded Ag particles of radius 4.5 nm, in the temperature range from 300 to 70 K, using all-optical time-resolved nanocalorimetry. The present results…

The strong dependence of the intensity of single bubble sonoluminescence (SBSL) on water temperature observed in experiment can be accounted for by the temperature dependence of the material constants of water, most essentially of the…

chao-dyn · Physics 2009-10-31 Sascha Hilgenfeldt , Detlef Lohse , Willy Moss

We report new measurements of the thermal expansion and thermo-optic coefficients of RbTiOPO$_4$ (RTP) and KTiOPO$_4$ (KTP) crystals over the temperature range 300-350 K. For RTP/KTP our coefficients of linear thermal expansion at 305 K…

Optics · Physics 2016-07-15 Arlee V. Smith , Jesse J. Smith , Binh T. Do

We explore the effect of temperatures between 80 and 720 K on the energy and linewidth of zone-center transverse (TO) and longitudinal (LO) optical phonons in bulk gallium phosphide (GaP) using Fourier transform infrared ellipsometry from…

Materials Science · Physics 2021-08-11 Nuwanjula S. Samarasingha , Stefan Zollner

The fluorescence detection of ultra high energy cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules over a wide range of atmospheric parameters, corresponding to altitudes typical of the…

Astrophysics · Physics 2019-08-13 M. Ave

Lutetium thermometry has been used to analyze Oklo natural nuclear reactor zones but leads to widely varying and puzzling predictions for the temperatures $T_O$ which in turn impacts bounds on time variation of the fine structure constant…

Nuclear Experiment · Physics 2012-02-17 C. R. Gould , E. I. Sharapov

The magnetic properties of Cu97Co3 and Cu90Co10 granular alloys were measured over a wide temperature range (2 to 300K). The measurements show an unusual temperature dependence of the coercive field. A generalized model is proposed and…

Materials Science · Physics 2009-11-10 W. C. Nunes , W. S. D. Folly , J. P. Sinnecker , M. A. Novak

We present a temperature enhanced photothermal cooling scheme in a micro-cantilever based FP cavity. Experiments at various temperatures show a temperature dependence of photothermal cooling efficiency. And approximate one order of…

Optics · Physics 2014-08-27 Hao Fu , Li-ping Ding , Tian-hua Mao , Gengyu Cao

Processing results of measurements of linear thermal expansion coefficients and linear thermal expansion of two brands of borosilicate glasses --- LK5 and Borofloat 33 --- are presented. The linear thermal expansion of glass samples have…

Applied Physics · Physics 2018-01-08 Leonid S. Sinev , Ivan D. Petrov

We have studied the temperature dependence of the photoemission spectra of Pr$_{1-x}$Ca$_x$MnO$_3$ (PCMO) with $x=0.25$, 0.3 and 0.5. For $x=0.3$ and 0.5, we observed a gap in the low-temperature CE-type charge-ordered (CO) phase and a…

Strongly Correlated Electrons · Physics 2009-11-13 K. Ebata , M. Hashimoto , K. Tanaka , A. Fujimori , Y. Tomioka , Y. Tokura

This study shows that the charge disproportionation at the Bi site in BaBiO$_3$ alters as a function of temperature. Decreasing the temperature from 300K down to 160K leads to a significant modification of the density of states…

Materials Science · Physics 2026-02-24 Sumit Sarkar , Priyanka Yadav , Sourav Chowdhury , Rajamani Raghunathan , Ram Janay Choudhary

Bromothymol blue (BTB) with the molecular formula of C27H28Br2O5S was grown onto p-Si substrate to fabricate heterojunction by spin coating technique. The current voltage (I-V) measurements of diode were carried out in dark and under…

Instrumentation and Detectors · Physics 2017-01-31 A Gencer Imer , A Tombak , A Korkut

The scintillation light output of a pure and a Thallium doped Sodium Iodide (NaI) crystal under irradiation with 5.486MeV \alpha -particles has been measured over a temperature range from 1.7K to 300K. Estimates of the decay time constant…

Instrumentation and Detectors · Physics 2012-12-06 C. Sailer , B. Lubsandorzhiev , C. Strandhagen , J. Jochum

The evolution of the temperature dependence of pseudogap $\Delta$*(T) in optimally doped (OD) YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) films with $T_{c}$ = 88.7 K under the influence of a magnetic field $B$ up to 8 T has been studied in detail.…

Thermal expansion of {\alpha}-rhombohedral boron ({\alpha}-B12) and two isostructural boron-rich pnictides (B12P2 and B12As2) has been studied between 298 and 1280 K by high-temperature synchrotron X-ray diffraction. For all studied phases…

Materials Science · Physics 2019-10-01 Kirill A. Cherednichenko , Vladimir L. Solozhenko

Resistance thermometry is a time-tested method for taking temperature measurements. In recent years fundamental limits to resistance-based approaches spurred considerable interest in developing photonic temperature sensors as a viable…

Optics · Physics 2015-10-28 Nikolai N. Klimov , Sunil Mittal , Michaela Berger , Zeeshan Ahmed