Search Results

You are looking at 1 - 10 of 17 items for

  • Author or Editor: M. Antony x
  • All content x
Clear All Modify Search

Abstract  

The nuclides82Br,128I,139Ba and161Tb were obtained through thermal neutron capture. Their half-lives have been measured and compared with previous values. Ge/Li/ detectors were used for decay data.

Restricted access

Abstract  

The half-lives of66Cu,81mSe,116mIn,140La,143Ce,171Er,177Yb,186Re,188mRe and188Re have been determined more accurately compared to previous measurements.

Restricted access

Abstract  

The half-lives of64Cu,72Ga,76As,82Br,88Rb,128I,161Tb and171Er have been measured more accurately than previously.

Restricted access

Abstract  

From the decay of their most intense -ray, /or rays/, the half-lives of24Na,31Si,49Ca,52V,139Ba,142Pr,153Sm,159Gd,165Dy,166Ho,175Yb,187W,233Th and239U have been redetermined.

Restricted access

Abstract  

The half-lives of56Mn,193Os and197,199Pt have been remeasured with better precision compared to previous valeus.

Restricted access

Abstract  

The half-lives of87mSr,90mY and109mPd have been determined more accurately, as compared to previous measurements.

Restricted access

Abstract  

Dysprosium hafnate is a candidate material for as control rods in nuclear reactor because dysprosium (Dy) and hafnium (Hf) have very high absorption cross-sections for neutrons. Dysprosium hafnate (Dy2O3·2HfO2-fluorite phase solid solution) was prepared by solid-state as well as wet chemical routes. The fluorite phase of the compound was characterized by using X-ray diffraction (XRD). Thermal expansion characteristics were studied using high temperature X-ray diffraction (HTXRD) in the temperature range 298–1973 K. Heat capacity measurements of dysprosium hafnate were carried out using differential scanning calorimetry (DSC) in the temperature range 298–800 K. The room temperature lattice parameter and the coefficient of thermal expansion are 0.5194 nm and 7.69 × 10−6 K−1, respectively. The heat capacity value at 298 K is 232 J mol−1 K−1.

Restricted access

Abstract  

The half-live of41Ar,80mBr,94mNb,101Mo,101Tc,109Pd,109mPd,122Sb,123mSn,152mEu and239Np have been measured more accurately compared to previous measurements.

Restricted access

Abstract  

The commercially available crystalline silicotitanate inorganic ion exchanger, IONSIV IE-911, and its parent precursor, TAM-5, have been evaluated for the removal of 137Cs from nitric acid medium and simulated high-level liquid waste. The distribution coefficient (K d) of cesium decreased with increasing nitric acid concentration and at 3.0 M nitric acid, a distribution coefficient of 1150 mL/g and 2600 mL/g were obtained for IONSIV IE-911 and TAM-5, respectively. Rapid uptake of cesium followed by the establishment of equilibrium occurring within three hours. Loading of cesium in ion exchangers increased with the increase in the concentration of cesium in aqueous phase and from Langmuir adsorption model the apparent capacity of cesium was 69 mg/g and 82 mg/g for IONSIV IE-911 and TAM-5, respectively. The performance of the sorbent under dynamic conditions was assessed by following a breakthrough (BT) curve up to C/C o = 1, where C and C o are the concentrations of cesium in the effluent and feed, respectively.

Restricted access