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Calorimeter
About: Calorimeter is a research topic. Over the lifetime, 5878 publications have been published within this topic receiving 77157 citations.
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TL;DR: In this article, a fully automated adiabatic heat capacity calorimeter is reported, which has been successfully operated at temperatures from 13 K to 530 K. The performance has been examined by measurements on the standard reference materials: benzoic acid (NBS SRM39i) from 15 K to 305 K and synthetic sapphire (α-Al 2 O 3 ) from 60 K to 505 K.
57 citations
TL;DR: In this article, a precision differential flow calorimeter for the measurement of enthalpies of mixing of liquids has been constructed for benzene + cyclohexane, which has been made at temperatures between 28015 K and 39315 K. The standard deviation of the 29815 K measurements is 021 J mol −1, and agreement with the results of best isothermal dilution calorimeters is excellent
56 citations
TL;DR: In this paper, a sensitive scanning calorimeter for use with microgram or submicrogram, thin film, or powder samples was developed. But the authors only used a resistive Pt heater to compensate the heat released or absorbed by the sample during a given transformation.
Abstract: We have designed and developed a sensitive scanning calorimeter for use with microgram or submicrogram, thin film, or powder samples Semiconductor processing techniques are used to fabricate membrane based microreactors with a small heat capacity of the addenda, 120nJ∕K at room temperature At heating rates below 10K∕s the heat released or absorbed by the sample during a given transformation is compensated through a resistive Pt heater by a digital controller so that the calorimeter works as a power compensated device Its use and dynamic sensitivity is demonstrated by analyzing the melting behavior of thin films of indium and high density polyethylene Melting enthalpies in the range of 40–250μJ for sample masses on the order of 15μg have been measured with accuracy better than 5% at heating rates ∼02K∕s The signal-to-noise ratio, limited by the electronic setup, is 200nW
56 citations
TL;DR: In this paper, two special calorimeters are foreseen for the instrumentation of the very forward region of the ILC detector, a luminometer designed to measure the rate of low angle Bhabha scattering events with a precision better than 10?3 and a low polar angle calorimeter, adjacent to the beam-pipe.
Abstract: Two special calorimeters are foreseen for the instrumentation of the very forward region of the ILC detector, a luminometer designed to measure the rate of low angle Bhabha scattering events with a precision better than 10?3 and a low polar angle calorimeter, adjacent to the beam-pipe. The latter will be hit by a large amount of beamstrahlung remnants. The amount and shape of these depositions will allow a fast luminosity estimate and the determination of beam parameters. The sensors of this calorimeter must be radiation hard. Both devices will improve the hermeticity of the detector in the search for new particles. Finely segmented and very compact calorimeters will match the requirements. Due to the high occupancy fast front-end electronics is needed. The design of the calorimeters developed and optimised with Monte Carlo simulations is presented. Sensors and readout electronics ASICs have been designed and prototypes are available. Results on the performance of these major components are summarised.
56 citations
TL;DR: In this article, a high-precision isothermal calorimeter for specific heat measurements in the temperature range 1 −20°K is described and a method is demonstrated for evolving a working temperature scale in the region 4 −2 −9⋯5°K, using carbon resistors.
56 citations