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RESEARCH PRODUCT
First experimental results of a cryogenic stopping cell with short-lived, heavy uranium fragments produced at 1000 MeV/u
Iain MooreJ. KurcewiczS. PurushothamanA. ProchazkaHans GeisselM. PfütznerS. PietriF. FarinonPeter DendoovenChristoph ScheidenbergerYasumoto TanakaHelmut WeickMaya TakechiW. R. PlassTimo DickelM. DiwischI. MukhaA. EstradeSami Rinta-antilaM. PetrickE. HaettnerC. NociforoF. AmjadR. KnöbelFlorian GreinerAnn-kathrin RinkMoritz P. ReiterNasser Kalantar-nayestanakiMikhail I. YavorJ. S. WinfieldC. JeschJ. EbertM. RanjanS. AyetJohannes Langsubject
Materials scienceGeneral Physics and Astronomychemistry.chemical_elementMass spectrometry7. Clean energy01 natural sciencesIonNuclear physicsENERGYGSIION-OPTICAL SYSTEMS0103 physical sciencesddc:530010306 general physicsSpectroscopySUPER-FRSHeliumSHIPTRAPCATCHER010308 nuclear & particles physicsProjectileExtraction (chemistry)UraniumBEAMSTIMEchemistryFLIGHT MASS-SPECTROMETRYMATTEROverall efficiencydescription
A cryogenic stopping cell (CSC) has been commissioned with U-238 projectile fragments produced at 1000 MeV/u. The spatial isotopic separation in flight was performed with the FRS applying a monoenergetic degrader. For the first time, a stopping cell was operated with exotic nuclei at cryogenic temperatures (70 to 100K). A helium stopping gas density of up to 0.05mg/cm(3) was used, about two times higher than reached before for a stopping cell with RF ion repelling structures. An overall efficiency of up to 15%, a combined ion survival and extraction efficiency of about 50%, and extraction times of 24ms were achieved for heavy a-decaying uranium fragments. Mass spectrometry with a multiple-reflection time-of-flight mass spectrometer has demonstrated the excellent cleanliness of the CSC. This setup has opened a new field for the spectroscopy of short-lived nuclei. Copyright (C) EPLA, 2013
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-11-01 | Europhysics Letters |