Temperature dependence of the probability of "small heating" and spectrum of UCNs up-scattered on the surface of Fomblin oil Y-HVAC 18/8

2016/09/20 by V. V. Nesvizhevsky, A. Yu. Voronin, Nesvizhevsky, V. V. +13
Engineering · #Aerosol Filtration and Electrostatic Precipitation #Electrohydrodynamics and Fluid Dynamics #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex) #Phase Equilibria and Thermodynamics

paper · pdf · doi:10.48550/arxiv.1609.06273

openalex publication_date 2016/09/20 · openalex created_date 2016/09/30 · openalex updated_date 2026/07/28

Abstract

We performed precision measurements of the probability of small heating and spectrum of UCNs up-scattered on the surface of hydrogen-free oil Fomblin Y-HVAC 18/8 as a function of temperature. The probability is well reproducible, does not depend on sample thickness and does not evolve in time. It is equal (9.8+-0.2)10^(-6) at the ambient temperature. The spectrum coincides with those measured with solid-surface and nanoparticle samples. Indirect arguments indicate that spectrum shape weakly depends on temperature. Measured experimental data can be satisfactory described both within the model of near-surface nanodroplets and the model of capillary waves.

Related

• Chromatic dispersion and thermal coefficients of hygroscopic liquids: 5 glycols and glycerol
• Molecular stochastic process on gold surface observed in broadband-infrared, background-suppressed, sum frequency generation spectroscopy: picosecond heat transfer to self-assembled monolayers
• Dynamics of thermal and wetting footprint of a volatile droplet during Leidenfrost transition
• Temperature Dependence of Thermal Conductivity Enhancement for Nanofluids
• On the Size Range of Active Nucleation Cavities on a Heating Surface