High-resolution ro-vibrational spectroscopy of ^15N2^16O in 1650-3450 cm-1 region is studied using highly enriched isotopologue sample. The positions of more than 7300 lines of ^15N2^16O isotopologue were measured wit...High-resolution ro-vibrational spectroscopy of ^15N2^16O in 1650-3450 cm-1 region is studied using highly enriched isotopologue sample. The positions of more than 7300 lines of ^15N2^16O isotopologue were measured with a typical accuracy of 5.0×10-4 cm-1. The transitions were rovibrationally assigned on the basis of the global effective Hamiltonian model. The band by band analysis allowed for the determination of the rovibrational parameters of a total of 73 bands. 29 of them are newly reported and more rotational transitions have been observed for the others. The maximum deviation of the preidictions of the effective Hamiltonian model is up to 0.70 cm-1 for the ^15N2^16O species.展开更多
Based on the unified Hauser-Feshbach and exciton model,a new model has been developed for the light nucleus reactions.The analysis of the ne u tron energy-angular spectra of n+ 1 6 O reaction has been performed.The fi...Based on the unified Hauser-Feshbach and exciton model,a new model has been developed for the light nucleus reactions.The analysis of the ne u tron energy-angular spectra of n+ 1 6 O reaction has been performed.The fit ting of the experimental data indicates that this method is successful for calculating the double-differential cross section of thelight nucleus.展开更多
Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in...Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in terms of both the DWBA and coupled channel calculations. The DWBA results introduce a reasonable description of the angular distributions and excitation function data. The coupled channel calculations provide a better agreement with the experimental forward and backward angle data than the DWBA calculations.展开更多
BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics with Z=0.0, 0.5, 0.8 and 1.1 were prepared at temperature 1200℃ for 5h by citrate sol-gel process. The complex dielectric constant and complex permeability of Ba...BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics with Z=0.0, 0.5, 0.8 and 1.1 were prepared at temperature 1200℃ for 5h by citrate sol-gel process. The complex dielectric constant and complex permeability of BaZnzCo2-zFe16 O27/SiO2-paraffin wax composites had been measured. Both the complex dielectric constant and dielectric loss exhibit almost no variation with frequency in 0.1-6.0GHz. The real part of permeability decreases with increasing frequency for all samples, and the imaginary part of permeability exhibits a clear resonance peak at 1.44GHz for Co2 W/SiO2, 1.32GHz for Zn0.5Co1.5 W/SiO2, 1.20GHz for Zn0.8Co1.2W/SiO2, and 1.08GHz for Zn1.1 Co0.9 W/SiO2. It is also showed that the content of zinc has a close effect on the magnetic properties of BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics, the greater the zinc content, the higher the values of imaginary part of permeability and magnetic loss.展开更多
Laser cooling is the most promising method to achieve high phase-space densities, even crystalline beams for relativistic heavy ion at storage rings[1]. A test laser cooling experiment has been performed with 12C3+ io...Laser cooling is the most promising method to achieve high phase-space densities, even crystalline beams for relativistic heavy ion at storage rings[1]. A test laser cooling experiment has been performed with 12C3+ ions at the CSRe. In this experiment, the 12C3+ ions were produced from an electron cyclotron resonance (ECR) ion source, and due to the residual gas and the injection gases such as CO and CO2, 16O4+ ions will be produced at the same time.展开更多
The excitation function and angular distributions for the ^16O+^20Ne system have been explained using the distorted wave Born approximation (DWBA) calculations. The real and imaginary Woods Saxon optical potentials ar...The excitation function and angular distributions for the ^16O+^20Ne system have been explained using the distorted wave Born approximation (DWBA) calculations. The real and imaginary Woods Saxon optical potentials are assumed to be energy-dependent. The gross resonant structures observed in the ^20Ne(^16O,^16O)^20 Ne excitation function are well described by the present DWBA calculations. Although the elastic and elastic-transfer analyses introduce a qualitative description of the experimental data, the coherent sum of the two reaction processes exhibit a much better result for both forward and large-angle data.展开更多
基金This work is supported by the National Natural Science Foundation of China （No.20903085）, the NKBRSF 2010CB9230, and RFBR-Russia （No.06-05- 39016）. The support of the Groupement de Recherche International SAMIA （Spectroscopie d＇Absorption des Mol@cules d＇Interet Atmospherique） between CNRS （France）, RFBR （Russia） and CAS （China） is also acknowledged.
文摘High-resolution ro-vibrational spectroscopy of ^15N2^16O in 1650-3450 cm-1 region is studied using highly enriched isotopologue sample. The positions of more than 7300 lines of ^15N2^16O isotopologue were measured with a typical accuracy of 5.0×10-4 cm-1. The transitions were rovibrationally assigned on the basis of the global effective Hamiltonian model. The band by band analysis allowed for the determination of the rovibrational parameters of a total of 73 bands. 29 of them are newly reported and more rotational transitions have been observed for the others. The maximum deviation of the preidictions of the effective Hamiltonian model is up to 0.70 cm-1 for the ^15N2^16O species.
文摘Based on the unified Hauser-Feshbach and exciton model,a new model has been developed for the light nucleus reactions.The analysis of the ne u tron energy-angular spectra of n+ 1 6 O reaction has been performed.The fit ting of the experimental data indicates that this method is successful for calculating the double-differential cross section of thelight nucleus.
文摘Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in terms of both the DWBA and coupled channel calculations. The DWBA results introduce a reasonable description of the angular distributions and excitation function data. The coupled channel calculations provide a better agreement with the experimental forward and backward angle data than the DWBA calculations.
基金supported by the National Natural Science Foundation of China (No.59995320.4).
文摘BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics with Z=0.0, 0.5, 0.8 and 1.1 were prepared at temperature 1200℃ for 5h by citrate sol-gel process. The complex dielectric constant and complex permeability of BaZnzCo2-zFe16 O27/SiO2-paraffin wax composites had been measured. Both the complex dielectric constant and dielectric loss exhibit almost no variation with frequency in 0.1-6.0GHz. The real part of permeability decreases with increasing frequency for all samples, and the imaginary part of permeability exhibits a clear resonance peak at 1.44GHz for Co2 W/SiO2, 1.32GHz for Zn0.5Co1.5 W/SiO2, 1.20GHz for Zn0.8Co1.2W/SiO2, and 1.08GHz for Zn1.1 Co0.9 W/SiO2. It is also showed that the content of zinc has a close effect on the magnetic properties of BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics, the greater the zinc content, the higher the values of imaginary part of permeability and magnetic loss.
基金National Natural Science Foundation of China(11504388), West Light Doctoral Foundation of Chinese Academy of Sciences
文摘Laser cooling is the most promising method to achieve high phase-space densities, even crystalline beams for relativistic heavy ion at storage rings[1]. A test laser cooling experiment has been performed with 12C3+ ions at the CSRe. In this experiment, the 12C3+ ions were produced from an electron cyclotron resonance (ECR) ion source, and due to the residual gas and the injection gases such as CO and CO2, 16O4+ ions will be produced at the same time.
文摘The excitation function and angular distributions for the ^16O+^20Ne system have been explained using the distorted wave Born approximation (DWBA) calculations. The real and imaginary Woods Saxon optical potentials are assumed to be energy-dependent. The gross resonant structures observed in the ^20Ne(^16O,^16O)^20 Ne excitation function are well described by the present DWBA calculations. Although the elastic and elastic-transfer analyses introduce a qualitative description of the experimental data, the coherent sum of the two reaction processes exhibit a much better result for both forward and large-angle data.
