Since the pioneering use of radioactive ion beams(RIB)in the1980s at Lawrence Berkeley National Laboratory in USA,production and investigation of exotic nuclei far from stability have become possible for a wide range ...Since the pioneering use of radioactive ion beams(RIB)in the1980s at Lawrence Berkeley National Laboratory in USA,production and investigation of exotic nuclei far from stability have become possible for a wide range of nuclear chart.Over the past few decades,the RIB has triggered tremendous advancements in the study of exotic nuclei.For instance,over 3300 nuclides have been discovered[1],with a substantial number of them produced by employing RIBs.Experimentally,there are several methods to generate radioactive nuclei.Among them,the in-flight production methods,specifically projectile fragmentation and in-flight fission,are proven to be two of the most crucial approaches.In-flight methods have been widely used to create the radioactive nuclei lying away from the valley of stability,such as those situated on or close to the r-process path(e.g.,see Refs.[2-4]),thereby allowing scientists to explore the previously inaccessible nuclear territory.In the past few decades,a number of fragment separators have been constructed worldwide in order to produce exotic nuclei utilizing the in-flight techniques[5].展开更多
Charge-changing cross section(σcc)measurements via the transmission method have recently seen significant progress with the aim of determining the charge radii of exotic nuclei.In this work,we report a newσcc measur...Charge-changing cross section(σcc)measurements via the transmission method have recently seen significant progress with the aim of determining the charge radii of exotic nuclei.In this work,we report a newσcc measurement of 304(9)MeV/nucleon^(28)Si on carbon at the second Radioactive Ion Beam Line in Lanzhou(RIBLL2)and describe the data analysis procedure in detail.This procedure is essential for evaluating the systematic uncertainty in the transmission method.The determinedσcc of 1125(11)mb is found to be consistent with the existing data at similar energies.The present work will serve as a reference forσcc determinations at RIBLL2.展开更多
基金supported partially by the National Natural Science Foundation of China(12325506,11922501,U1832211,11961141004,and 11905260)the Western Light Project of the Chinese Academy of Sciencesthe open research project of CAS large research infrastructures。
文摘Since the pioneering use of radioactive ion beams(RIB)in the1980s at Lawrence Berkeley National Laboratory in USA,production and investigation of exotic nuclei far from stability have become possible for a wide range of nuclear chart.Over the past few decades,the RIB has triggered tremendous advancements in the study of exotic nuclei.For instance,over 3300 nuclides have been discovered[1],with a substantial number of them produced by employing RIBs.Experimentally,there are several methods to generate radioactive nuclei.Among them,the in-flight production methods,specifically projectile fragmentation and in-flight fission,are proven to be two of the most crucial approaches.In-flight methods have been widely used to create the radioactive nuclei lying away from the valley of stability,such as those situated on or close to the r-process path(e.g.,see Refs.[2-4]),thereby allowing scientists to explore the previously inaccessible nuclear territory.In the past few decades,a number of fragment separators have been constructed worldwide in order to produce exotic nuclei utilizing the in-flight techniques[5].
基金Supported by the National Natural Science Foundation of China(U1832211,11961141004,11922501,11475014,11905260)the Western Light Project of Chinese Academy of Sciencesthe Natural Science Foundation of Anhui Province,China(2008085MA17)。
文摘Charge-changing cross section(σcc)measurements via the transmission method have recently seen significant progress with the aim of determining the charge radii of exotic nuclei.In this work,we report a newσcc measurement of 304(9)MeV/nucleon^(28)Si on carbon at the second Radioactive Ion Beam Line in Lanzhou(RIBLL2)and describe the data analysis procedure in detail.This procedure is essential for evaluating the systematic uncertainty in the transmission method.The determinedσcc of 1125(11)mb is found to be consistent with the existing data at similar energies.The present work will serve as a reference forσcc determinations at RIBLL2.
