Atomic Lifetimes of Astrophysical Interest in Ions of Fe

Chemistry in Low Pressure Cold Plasmas: Ions of Astrophysical Interest

The ionic chemistry of various hydrogen mixtures (H2/N2, H2/O2, and H2/air) has been studied in low pressure hollow cathode discharges. The major ions identified in the different discharges (H3, N2H, H3O and NH4) have been also found in astronomical observations or predicted in astrochemical models. The relative stability of the protonated ions in the various mixtures has been investigated in d...

application and construction of carbon paste modified electrodes developed for determination of metal ions in some real samples

ساخت الکترودهاِی اصلاح شده ِیکِی از چالشهاِی همِیشگِی در دانش شیمِی بوِیژه شیمِی تجزیه مِی باشد ،که با در نظر گرفتن سادگِی ساخت، کاربردی بودن و ارزان بودن روش مِی توان به باارزش بودن چنِین سنسورهاِی پِی برد.آنچه که در ادامه آورده شده به ساخت و کاربرد الکترودهاِی اصلاح شده با استفاده از نانو ذرات در اندازه گِیرِی ولتامترِی آهن وکادمِیم اشاره دارد. کار اول اختصاص دارد به ساخت الکترود خمِیر کربن اصلاح شده با لِیگاند داِ...

The stopping of low energy ions in reactions of astrophysical interest

The velocity dependence of the stopping power of swift protons and deuterons in low energy collisions with hydrogen and helium gas targets is investigated with the numerical solution of the time-dependent Schrödinger coupled-channels equations using molecular orbital wavefunctions. At low projectile energies the stopping is mainly due to nuclear stopping, charge exchange of the electron, and ex...

Oscillator Strengths of Astrophysical Interest

Application of the relativistic coupled-cluster theory to boron-like ions of astrophysical interest

By employing an all order relativistic many-body theory called the relativistic coupled-cluster theory we have calculated the weighted oscillator strengths and the transition probabilities for a few low-lying transitions of boron-like ions: Mg VIII, Si X and S XII which are astrophysically important, particularly, in the atmospheres of the solar corona. The physical effects associated with thes...