Decay Study for the Short-lived Isomer in Fully Stripped Ion Based on the HIRFL-CSR
The Half-life of highly charged ions(HCI)is widely used in many research fields such as nuclear physics and nuclear astrophysics,and has potential application value in nuclear waste processing and other appli-cation fields.At the cooler storage ring of the heavy ion research facility in Lanzhou(HIRFL-CSR),a set of ex-perimental methods is established for measuring the lifetime of highly charged ions based on an isochronous mass spectrometry.This experimental method has unique advantages in measuring nuclear decay occurring on the time scale of tens to hundreds of microseconds.It is especially suitable for studying the decay of short-lived isomeric states in highly charged states.The time signals of ions were recorded using a time-of-flight detector.Through these time signals,the flight time of each ion could be extracted and the residuals of the linear fit between flight time and the number of revolutions could be obtained.The decay events could be distinguished based on these re-siduals.Based on the decay events,the lifetime of the fully stripped isomer 94mRu44+was determined.The experi-ment demonstrated the feasibility of studying decays of short-lived isomers in HCI using a storage ring.
HIRFL-CSRisochronous mass spectrometryfully stripped ionlifetime measurement of short-lived nuclides94mRu
万方数据
维普
