The Interstellar 7 Li / 6 Li Ratio

نویسندگان

  • Martin Lemoine
  • Roger Ferlet
چکیده

We discuss the observational status of the interstellar lithium isotopic ratio and its significance with respect to the galactic evolution of lithium. Based on invited talks given at: ESO/EIPC Workshop on “Light Elements Abundances”, Isola d’Elba, Italy, May 22–28, 1994 ESO Workshop on “Science with the VLT”, Garching, Germany, June 28 – July 01, 1994 IAU General Assembly, Joint Discussion 11, Den Haag, The Netherlands, August 22, 1994

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

Effect of Calcination Temperature and Li / TFA Molar Ratio on Morphology and Phase of Lithium Fluoride Nanoparticles Produced by Fluorolytic Sol-Gel Method

In this research, synthesis of lithium fluoride (LiF) nanoparticles  by fluorolytic sol-gel method has been studied. Moreover, the effect of lithium ion to fluorine source molar ratio and calcination temperature on particle size and phase of LiF nanoparticles were investigated. Lithium acetate (C2H3LiO2), trifluoroacetic acid (TFA), ethylene glycol monobutyl ether and oleic acid were used as so...

متن کامل

An Ultra-High-Resolution Survey of the Interstellar Li-to-Li Isotope Ratio in the Solar Neighborhood

In an effort to probe the extent of variations in the interstellar Li/Li ratio seen previously, ultra-high-resolution (R ∼ 360,000), high signal-to-noise spectra of stars in the Perseus OB2 and Scorpius OB2 Associations were obtained. These measurements confirm our earlier findings of an interstellar Li/Li ratio of about 2 toward o Per, the value predicted from models of Galactic cosmic ray spa...

متن کامل

THE CHAIN PROPERTIES AND LI-YORKE SENSITIVITY OF ZADEH'S EXTENSION ON THE SPACE OF UPPER SEMI-CONTINUOUS FUZZY SETS

Some characterizations on the chain recurrence, chain transitivity, chain mixing property,shadowing and $h$-shadowing for Zadeh's extension are obtained. Besides, it is provedthat a dynamical system is spatiotemporally chaotic provided that the Zadeh's extensionis Li-Yorke sensitive.

متن کامل

NEW DETREMINATION METHOD OF PRIMORDIAL Li ABUNDANCE

We discuss the primordial nucleosynthesis in lepton asymmetric Universe models. In order to better estimate the universal baryonmass density parameter Ωb, we try to remove the uncertainty from the theoretical prediction of primordial Li abundance. We propose a new method to determine the primordial Li by the use of isotopic abundance ratio Li/Li in the interstellar medium which exhibits the min...

متن کامل

Electrochemical properties of iron oxide nanoparticles as an anode for Li-ion batteries

The synthesis of iron oxide nano-particles by direct thermal decomposition was studied. Simultaneous thermal analysis and Fourier transform infrared spectroscopy results confirmed the formation of iron-urea complex, and disclosed iron oxide formation mechanism. Calcination of the iron-urea complex at 200°C and 250°C for 2 hrs. resulted in the formation of maghemite along with hematite as a seco...

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 1998