Two types of adsorbed water in natural montmorillonites at low temperatures by dielectric spectroscopy

Interactions of adsorbed CO₂ on water ice at low temperatures.

We present a computational study into the adsorption properties of CO2 on amorphous and crystalline water surfaces under astrophysically relevant conditions. Water and carbon dioxide are two of the most dominant species in the icy mantles of interstellar dust grains and a thorough understanding of their solid phase interactions at low temperatures is crucial for understanding the structural evo...

Heat capacity of adsorbed Helium-3 at ultra-low temperatures

Dielectric signatures of adsorbed and salty liquid water at the Phoenix landing site, Mars

[1] The real part of the dielectric permittivity of the Martian regolith was measured by the Thermal and Electrical Conductivity Probe (TECP) on the Phoenix lander. We interpret these data using laboratory measurements of permittivity as a function of H2O and salt content, soil type, and temperature. Due to variability in sensor coupling, we focus on data taken at one locality (“Vestri”) three ...

Dielectric relaxation in dimethyl sulfoxide/water mixtures studied by microwave dielectric relaxation spectroscopy.

Dielectric spectra of dimethyl sulfoxide (DMSO)/water mixtures, over the entire concentration range, have been measured using the transmission line method at frequencies from 45 MHz to 26 GHz and at temperatures of 298-318 K. The relaxation times of the mixtures show a maximum at an intermediate molar fraction of DMSO. The specific structure of mixtures in different concentration regions was de...

Root Resistance as a Cause of Decreased Water Absorption by Plants at Low Temperatures.

It is well known that low soil temperatures decrease the absorptionl of water by plants. Many years ago SACHS (24) reported that tobacco and gourd plants growing in moist soil under conditions favoring a low rate of transpiration wilted when the soil was cooled to 30 to 50 C., but recovered when the soil was warmed to 120 to 180 C. Cabbage and turnips were less affected, absorbing enough water ...