skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The “anomalous” dynamics of decahyroisoquinoline revisited

Abstract

Decahydroisoquinoline (DHIQ) appears to be a unique material—the only non-associated, simple liquid with dynamics deviating from density scaling. To examine whether this anomaly is real, the density, ρ, of DHIQ was measured at temperatures, T, as low as 214 K and pressures up to ∼1.2 GPa. This enabled the equation of state (EoS) to be determined, without extrapolation, over the range of thermodynamic conditions for which the relaxation times had been reported. Using this less ambiguous EoS, we find that within the precision of the available relaxation times, the latter are a function of T/ρ{sup 3.9}, contrary to previous reports. Thus, the behavior of DHIQ is unexceptional; similar to every non-associated liquid tested to date, its dynamics comply with density scaling.

Authors:
;  [1]
  1. Chemistry Division, Naval Research Laboratory, Washington, DC 20375-5320 (United States)
Publication Date:
OSTI Identifier:
22493647
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 144; Journal Issue: 2; Other Information: (c) 2016 U.S. Government; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACCURACY; DENSITY; EQUATIONS OF STATE; EXTRAPOLATION; HYDROCARBONS; LIQUIDS; PRESSURE DEPENDENCE; QUINOLINES; TEMPERATURE DEPENDENCE; THERMODYNAMICS

Citation Formats

Casalini, R., and Roland, C. M. The “anomalous” dynamics of decahyroisoquinoline revisited. United States: N. p., 2016. Web. doi:10.1063/1.4940034.
Casalini, R., & Roland, C. M. The “anomalous” dynamics of decahyroisoquinoline revisited. United States. doi:10.1063/1.4940034.
Casalini, R., and Roland, C. M. Thu . "The “anomalous” dynamics of decahyroisoquinoline revisited". United States. doi:10.1063/1.4940034.
@article{osti_22493647,
title = {The “anomalous” dynamics of decahyroisoquinoline revisited},
author = {Casalini, R. and Roland, C. M.},
abstractNote = {Decahydroisoquinoline (DHIQ) appears to be a unique material—the only non-associated, simple liquid with dynamics deviating from density scaling. To examine whether this anomaly is real, the density, ρ, of DHIQ was measured at temperatures, T, as low as 214 K and pressures up to ∼1.2 GPa. This enabled the equation of state (EoS) to be determined, without extrapolation, over the range of thermodynamic conditions for which the relaxation times had been reported. Using this less ambiguous EoS, we find that within the precision of the available relaxation times, the latter are a function of T/ρ{sup 3.9}, contrary to previous reports. Thus, the behavior of DHIQ is unexceptional; similar to every non-associated liquid tested to date, its dynamics comply with density scaling.},
doi = {10.1063/1.4940034},
journal = {Journal of Chemical Physics},
number = 2,
volume = 144,
place = {United States},
year = {Thu Jan 14 00:00:00 EST 2016},
month = {Thu Jan 14 00:00:00 EST 2016}
}
  • No abstract prepared.
  • Behavior of the photon strength function of 198Au is treated using a novel approach based on studying {gamma} cascades following the thermal and keV neutron capture in 197Au.
  • We revisit the effect of CP violating anomalous top-quark couplings in tt production and decay. We consider tt production through gluon fusion (and light qq annihilation) followed by top-quark decay into bW or bl{nu}. We find explicit analytic expressions for all the triple products generated by the anomalous couplings that fully incorporate all spin correlations. Our results serve as a starting point for numerical simulations for the CERN LHC.
  • Time-resolved emission measurements of the solute coumarin 153 (C153) are used to probe the time dependence of solvation in 24 common solvents at room temperature. Significant improvements in experimental time resolution ({approx}100 fs instrument response) as well as corresponding improvements in analysis methods provide confidence that all of the spectral evolution (including both the inertial and the diffusive parts of the response) are observed in these measurements. Extensive data concerning the steady-state solvatochromism of C153, coupled to an examination of the effects of vibrational relaxation, further demonstrate that the spectral dynamics being observed accurately monitor the dynamics of nonspecific solvation.more » Comparisons to theoretical predictions show that models based on the dielectric response of the pure solvent provide a semiquantitative understanding of the dynamics observed. 156 refs., 26 figs., 5 tabs.« less
  • Chernobyl radioisotope release data presented by the Soviets at Vienna in August 1986 are reviewed and compared with newly available data for the period of the active phase (t=0{sup +} up to 10 days). An analysis of these data indicates that radioisotopes were released under roughly isothermal conditions. Moreover, the releases of 17 isotopes analyzed are surprisingly close in magnitude, both with respect to their normalized mass releases and with respect to their release efficacies relative to Zr-95. On the basis of the information presented in this and the previous two articles of this series, a sequence of events ismore » postulated as to what may have occurred to the Unit 4 core during the active phase. This scenario strongly contradicts accounts based on information presented by the Soviets in August 1986. The release of eight volatile isotopes is estimated to be 92 MCi. This in substantially more than the 50 MCi claimed by the Soviets and confirms western suspicions that more was released.« less