In-ring nuclear reactions induced by light-ions,which are characterized by low-momentum sensitivity and low background,play an important role in nuclear structure and astrophysics investigations.Recently,the in-ring p...In-ring nuclear reactions induced by light-ions,which are characterized by low-momentum sensitivity and low background,play an important role in nuclear structure and astrophysics investigations.Recently,the in-ring proton-nucleus elastic scattering measurements at low momentum transfer based on the internal hydrogen-gas-jet target have been successfully performed at the Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou(HIRFL-CSR).In this proceeding,we present the progress of matter radius measurements using the small-angle differential cross sections of proton-nucleus elastic scattering at HIRFL-CSR.展开更多
The concept of isochronous mass spectrometry （IMS） applying two time-of-flight （TOF） detectors originated many years ago at GSI. However, the corresponding method for data analysis has never been discussed in deta...The concept of isochronous mass spectrometry （IMS） applying two time-of-flight （TOF） detectors originated many years ago at GSI. However, the corresponding method for data analysis has never been discussed in detail. Recently, two TOF detectors have been installed at CSRe and the new working mode of the ring is under test. In this paper, a data analysis method for this mode is introduced and tested with a series of simulations. The results show that the new IMS method can significantly improve mass resolving power via the additional velocity information of stored ions. This improvement is especially important for nuclides with Lorentz factor γ-value far away from the transition point yt of the storage ring CSRe.展开更多
基金Supported in part by the NSFC(12375115,12121005)。
文摘In-ring nuclear reactions induced by light-ions,which are characterized by low-momentum sensitivity and low background,play an important role in nuclear structure and astrophysics investigations.Recently,the in-ring proton-nucleus elastic scattering measurements at low momentum transfer based on the internal hydrogen-gas-jet target have been successfully performed at the Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou(HIRFL-CSR).In this proceeding,we present the progress of matter radius measurements using the small-angle differential cross sections of proton-nucleus elastic scattering at HIRFL-CSR.
基金Supported by the 973 Program of China(2013CB834401)National Nature Science Foundation of China(U1232208,U1432125,11205205,11035007)the Helmholtz-CAS Joint Research Group(Group No.HCJRG-108)
文摘The concept of isochronous mass spectrometry （IMS） applying two time-of-flight （TOF） detectors originated many years ago at GSI. However, the corresponding method for data analysis has never been discussed in detail. Recently, two TOF detectors have been installed at CSRe and the new working mode of the ring is under test. In this paper, a data analysis method for this mode is introduced and tested with a series of simulations. The results show that the new IMS method can significantly improve mass resolving power via the additional velocity information of stored ions. This improvement is especially important for nuclides with Lorentz factor γ-value far away from the transition point yt of the storage ring CSRe.
