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Thermal Conductivity Measurements of deuterium by 3ω-method (CAT#: STEM-PPA-0050-WXH)

Introduction

Deuterium, (D, or 2H), also called heavy hydrogen, isotope of hydrogen with a nucleus consisting of one proton and one neutron, which is double the mass of the nucleus of ordinary hydrogen (one proton). Deuterium has an atomic weight of 2.014.<br />Deuterium is widely used in prototype fusion reactors and has their application in military, industrial and scientific fields. In nuclear fusion reactors, it is used as a tracer and it is responsible for slowing down neutrons in heavy water moderated fission reactors.




Principle

The process involves a metal heater applied to the sample that is heated periodically. The temperature oscillations thus produced are then measured. The thermal conductivity and thermal diffusivity of the sample can be determined from their frequency dependence.

Applications

Determining the thermal conductivities of bulk material (i.e. solid or liquid) and thin layers

Procedure

1. Sample preparation and mounting
2. Experimental condition setting
3. Experiment start: Turn on the 3ω signal generator and lock-in amplifier, and control the temperature controller to make the sample temperature reach the set value. When the sample reaches a stable state, data acquisition and processing begin.
4. Data processing