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Relationship between effective temperature of thermalized ions and ion source temperature
International Journal of Mass Spectrometry, 1998Abstract The spontaneous dissociation of mixed proton bound dimers of nitrile bases has been studied using mass-analyzed ion kinetic energy spectra in a reverse geometry double focusing instrument coupled to a high pressure ion source. A linear correlation was found between the relative ion abundance ratios of the fragments and the ion source ...
K. Norrman, T.B. McMahon
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Effects of temperature and temperature gradients on ion-sensitive microelectrodes
Journal of Neuroscience Methods, 1988Ion-sensitive microelectrodes are widely used in studies of mammalian tissues. Often the tissue is maintained at 37 degrees C, some 10-15 degrees C above room temperature. The temperature difference between the room and the preparation was found to be capable of altering the measured ion potential by as much as 10 mV.
K H, Reid, R, Marrannes, A, Wauquier
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High temperature ion sources with ion confinement
Review of Scientific Instruments, 2002Different types of high temperature ion sources such as surface, laser, and electron beam ionization ion sources have been developed and tested in off-line and on-line experiments. All types of developed ion sources have an essential common feature: an existence of the ion confinement inside the ion source cavity.
V. N. Panteleev +8 more
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Effective ion temperatures in a quadrupole ion trap
The Journal of Physical Chemistry, 1990The reaction of O 2 .+ with methane is used as a «chemical thermometer» to obtain information concerning effective ion temperatures in a Paul-type quadrupole ion trap using He buffer gas. The rate constant as well as the product distribution indicates an effective temperature of 600-700 K for O 2 .+ ions trapped for long times; i.e., a similar rate
B. D. Nourse, H. I. Kenttamaa
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High-Temperature Ion Implantation in Diamond
Physica Status Solidi (a), 1978C+ and N+ implantation into type IIa diamond are performed at various temperatures (25 to 1000°C) and ion-induced damage is studied by EPR measurements at 1.2 to 300 K. Hot implantation at 1000°C results in a reduced spin density of “amorphous” carbon by an order of magnitude less than that due to cold-implantation and a subsequent annealing at 1000°C.
Y. H. Lee, P. R. Brosious, J. W. Corbett
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TRP ION CHANNELS AND TEMPERATURE SENSATION
Annual Review of Neuroscience, 2006The abilities to sense environmental and internal temperatures are required for survival, both for maintenance of homeostasis and for avoidance of tissue-damaging noxious temperatures. Vertebrates can sense external physical stimuli via specialized classes of neurons in the peripheral nervous system that project to the skin.
Ajay, Dhaka +2 more
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Temperature dependence of negative ion lifetimes
The Journal of Chemical Physics, 2007The autodetachment lifetimes of SF6−* and C6F6−* ions formed by charge transfer in K(np)∕SF6, C6F6 collisions are measured as a function of target temperature over the range of ∼300–600K with the aid of time-of-flight techniques and a Penning ion trap. At room temperature only formation of long-lived SF6−* ions with lifetimes τ≳1ms is seen.
M, Cannon +5 more
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Dual-Temperature Ion Exchange Fractionation
Solvent Extraction and Ion Exchange, 1999ABSTRACT This paper reviews the results obtained by studying the dual-temperature ion-exchange fractionation (DTIXF) technique. The DTIXF is based on the use of different affinity at different temperatures of ion exchangers towards ions to be separated.
Dmitri Muraviev +2 more
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The effect of temperature on single-column ion-chromatography of metal ions
Talanta, 1987Temperature is shown to be a valuable parameter for optimizing single-column ion-chromatographic separations of metal ions. With a perchloric acid eluent, retention times of bivalent metal ions decrease with an increase in system temperature, but with doubly protonated amines as eluents the retention times increase with an increase in temperature ...
N E, Fortier, J S, Fritz
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