isotope effects for a factor of 36.1 in isotopic mass

نویسندگان

  • Donald G. Fleming
  • Donald J. Arseneau
  • Oleksandr Sukhorukov
  • Jess H. Brewer
  • Steven L. Mielke
  • Donald G. Truhlar
  • George C. Schatz
  • Bruce C. Garrett
  • Kirk A. Peterson
چکیده

Kinetics of the reaction of the heaviest hydrogen atom with H2, the 4Heμ + H2 → 4HeμH + H reaction: Experiments, accurate quantal calculations, and variational transition state theory, including kinetic isotope effects for a factor of 36.1 in isotopic mass Donald G. Fleming,1,a) Donald J. Arseneau,1 Oleksandr Sukhorukov,1,b) Jess H. Brewer,2 Steven L. Mielke,3 Donald G. Truhlar,3,a) George C. Schatz,4 Bruce C. Garrett,5 and Kirk A. Peterson6 1TRIUMF and Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada 2Department of Physics, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada 3Department of Chemistry and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, USA 4Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, USA 5Chemical and Material Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA 6Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, USA

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Isotope-hydrochemistry of Arnave karstic spring and Shirin dareh dam reservoir, North Khorasan

Surface and groundwater resources such as Arnaveh karstic spring and Shirin Dareh reservoir are the main sources of drinking water and agricultural activity in the North Khorasan province, northeast of Iran. The main agents of this study are to evaluate the origin, hydrochemical and isotope characteristics of water resources and also suitability of the Shirin dareh reservoir water for drinking ...

متن کامل

Mass-independent Isotope Fractionation of Molybdenum and Ruthenium in Murchison

Introduction: Dauphas et al. [1] and Yin et al. [2] reported molybdenum isotopic anomalies in bulk undifferentiated and differentiated meteorites and this was the first time that isotopic anomalies were found on the scale of a meteorite hand-specimen. Even more recently, Chen and Papanastassiou [3,4] identified ruthenium isotopic anomalies in meteorites. Dauphas et al. [5] used theoretical prod...

متن کامل

Laser-Induced Isotopic Effects in Titanium Resonance

Titanium isotope ratios have been measured by resonance ionization mass spectrometry (RIMS) with special emphasis on the nature of laserinduced isotopic selectivity. A pronounced wavelength dependence of even mass isotope ratios is caused by large nuclear volume effects near the magic neutron number 28 in T i . Optical isotope shifts, ranging from 0.07 to 0.21 cm-l, between T i and 4eTi were me...

متن کامل

Measurement of isotopic ratios by resonance ionization mass spectrometry in the presence of optical isotope shifts

The determination of isotopic ratios by Resonance Ionization Mass Spectrometry (RIMS) requires a thorough characterisation of laser induced isotope effects. Besides the widely discussed odd-even effects (Fairbanks et al.l989,Lambropoulos et al.1989, Payne et al. 1991, Wunderlich et al 1992 a,b) there have also been reports of laser induced shifts in even-even isotopic ratios (Joung et al., 1990...

متن کامل

Calcium isotope analysis by mass spectrometry.

The variations in the isotopic composition of calcium caused by fractionation in heterogeneous systems and by nuclear reactions can provide insight into numerous biological, geological, and cosmic processes, and therefore isotopic analysis finds a wide spectrum of applications in cosmo- and geochemistry, paleoclimatic, nutritional, and biomedical studies. The measurement of calcium isotopic abu...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011