We present ab initio calculations of cross sections for projectile and target excitation occurring in the course of He^(+)+He collisions using a threeactive-electron semiclassical nonperturbative approach.Intermediate...We present ab initio calculations of cross sections for projectile and target excitation occurring in the course of He^(+)+He collisions using a threeactive-electron semiclassical nonperturbative approach.Intermediate impact energies ranging from 1 keV to 225 keV/u are considered.The results of our calculations agree well with available measurements for both projectile and target excitation in the respective overlapping energy regions.A comparison of our results with those of other theoretical calculations further demonstrates the importance of a nonperturbative approach that includes a sufficient number of channels.Furthermore,it is found that the cross sections for target excitation into singlet states show a valley centered at about 25 keV/u,resulting from competition with electron transfer to singlet projectile states.By contrast,the cross sections for target excitation into triplet states do not exhibit any such structures.展开更多
Fanged frogs, now called Limnonectes kuhlii, from Borneo are remotely related to true Javanese L. kuhliL For future taxonomy of Bornean fanged frogs, we fix the nomenclatural status of two existing names, Rana conspic...Fanged frogs, now called Limnonectes kuhlii, from Borneo are remotely related to true Javanese L. kuhliL For future taxonomy of Bornean fanged frogs, we fix the nomenclatural status of two existing names, Rana conspicillata Giunther, 1872 and Rana paradoxa Mocquard, 1890. Morphological comparison of the type-series revealed heterospecific relationships of the two species. For R. conspicillata, we designate BMNH 1947.2.29.20 as the lectotype, and for R. para doxa, we also designate MNHN 1889.222 as the lectotype and propose a replacement name Limnonectes mocquardi, in order to stabilize their nomenclature.展开更多
基金This work is supported by the National Natural Science Foundation of China(Grant Nos.11934004 and 11704040)the National Key Research and Development Program of China(Grant No.2017YFA0402300)+3 种基金the CAEP Foundation(Grant No.YZJJLX2017010)Z.H.is supported by the CAEP Foundation(Grant No.CX2019022)the National Nature Science Foundation of China(Grant No.11675158)This project has received funding from the LABEX Plas@par(Grant No.ANR-11-IDEX-0004-02).
文摘We present ab initio calculations of cross sections for projectile and target excitation occurring in the course of He^(+)+He collisions using a threeactive-electron semiclassical nonperturbative approach.Intermediate impact energies ranging from 1 keV to 225 keV/u are considered.The results of our calculations agree well with available measurements for both projectile and target excitation in the respective overlapping energy regions.A comparison of our results with those of other theoretical calculations further demonstrates the importance of a nonperturbative approach that includes a sufficient number of channels.Furthermore,it is found that the cross sections for target excitation into singlet states show a valley centered at about 25 keV/u,resulting from competition with electron transfer to singlet projectile states.By contrast,the cross sections for target excitation into triplet states do not exhibit any such structures.
基金Examination of museum specimens by MM was made possible by grants from the Monbusho International Scientific Research Programs(Field Research Nos.01041051,02041051)
文摘Fanged frogs, now called Limnonectes kuhlii, from Borneo are remotely related to true Javanese L. kuhliL For future taxonomy of Bornean fanged frogs, we fix the nomenclatural status of two existing names, Rana conspicillata Giunther, 1872 and Rana paradoxa Mocquard, 1890. Morphological comparison of the type-series revealed heterospecific relationships of the two species. For R. conspicillata, we designate BMNH 1947.2.29.20 as the lectotype, and for R. para doxa, we also designate MNHN 1889.222 as the lectotype and propose a replacement name Limnonectes mocquardi, in order to stabilize their nomenclature.
