We study the energy level statistics of the SO(5) limit of super-symmetry U(6/4) in odd-A nucleus using the interacting boson-fermion model. The nearest neighbor spacing distribution (NSD) and the spectral rigidity (...We study the energy level statistics of the SO(5) limit of super-symmetry U(6/4) in odd-A nucleus using the interacting boson-fermion model. The nearest neighbor spacing distribution (NSD) and the spectral rigidity (△3)are investigated, and the factors that affect the properties of level statistics are also discussed. The results show that the boson number N is a dominant factor. If N is small, both the interaction strengths of subgroups SOB(5) and SOBF(5)and the spin play important roles in the energy level statistics, however, along with the increase of N, the statistics distribution would tend to be in Poisson form.展开更多
The present paper describes the preparation of new organic reagent 2-[2-(6-chloro benzothiazolyl) azo]-resorcinol (6-CIBTAR = LH2) and used for the spectrophotometric determination of traces microgram amount of ni...The present paper describes the preparation of new organic reagent 2-[2-(6-chloro benzothiazolyl) azo]-resorcinol (6-CIBTAR = LH2) and used for the spectrophotometric determination of traces microgram amount of nickel (II) and copper (II) was found to form Ni(II)-CIBTAR at pH 7.5 giving a green coloured complex with maximum absorption at wavelength 636 nm and copper (II) was found to from Cu(II)-CIBTAR at pH 6.5 giving green bluish coloured complex with maximum absorption at wavelength 648 nm. The molar absorptivity (~) of the complexes are 0.3695 ~ 104 L.moll-cml and 0.3933 ~ 154 L'mol'l.cm1 for Ni(II) and Cu(II) respectively. Calibration curves for the determination of nickel(II) and copper (II) conformed to beers law over the concentration rang of (1-20) μg.mL-1. The DL (detection limit), RSD (relative standard deviations), RE (relative errors) and recovery for Ni(II) and Cu(II) complexes were found to be D.L = 0.45, 0.61; R.S.D% = 1.81, 2.04; Erei% = 1.3, 0.86 and Re% = 98.7, 99.14 respectively. The analytical data show the metal to reagent ratio (mole ratio method; M:L) in Ni(II) and Cu(II) complexes are 1:2.展开更多
文摘We study the energy level statistics of the SO(5) limit of super-symmetry U(6/4) in odd-A nucleus using the interacting boson-fermion model. The nearest neighbor spacing distribution (NSD) and the spectral rigidity (△3)are investigated, and the factors that affect the properties of level statistics are also discussed. The results show that the boson number N is a dominant factor. If N is small, both the interaction strengths of subgroups SOB(5) and SOBF(5)and the spin play important roles in the energy level statistics, however, along with the increase of N, the statistics distribution would tend to be in Poisson form.
文摘The present paper describes the preparation of new organic reagent 2-[2-(6-chloro benzothiazolyl) azo]-resorcinol (6-CIBTAR = LH2) and used for the spectrophotometric determination of traces microgram amount of nickel (II) and copper (II) was found to form Ni(II)-CIBTAR at pH 7.5 giving a green coloured complex with maximum absorption at wavelength 636 nm and copper (II) was found to from Cu(II)-CIBTAR at pH 6.5 giving green bluish coloured complex with maximum absorption at wavelength 648 nm. The molar absorptivity (~) of the complexes are 0.3695 ~ 104 L.moll-cml and 0.3933 ~ 154 L'mol'l.cm1 for Ni(II) and Cu(II) respectively. Calibration curves for the determination of nickel(II) and copper (II) conformed to beers law over the concentration rang of (1-20) μg.mL-1. The DL (detection limit), RSD (relative standard deviations), RE (relative errors) and recovery for Ni(II) and Cu(II) complexes were found to be D.L = 0.45, 0.61; R.S.D% = 1.81, 2.04; Erei% = 1.3, 0.86 and Re% = 98.7, 99.14 respectively. The analytical data show the metal to reagent ratio (mole ratio method; M:L) in Ni(II) and Cu(II) complexes are 1:2.