6533b7d0fe1ef96bd125aec1
RESEARCH PRODUCT
New neutron-deficient isotopes from $^{78}$Kr fragmentation
Shigeru KubonoDaiki NishimuraG. De AngelisY. FujitaM. GerbauxHiroyoshi SakuraiC. BorceaD. S. AhnJ. ChibaShunji NishimuraD. LubosC. MagronD. R. NapoliS. YagiH. SuzukiB. RubioJ. AgramuntV. GuadillaP. A. SöderströmP. AscherToshiyuki KuboNaohito InabeJin WuY. ShimizuH. OikawaJ. GiovinazzoShintaro GoA. BosoW. GelletlyW. GelletlyAlejandro AlgoraAlejandro AlgoraKathrin WimmerF. DielGabor KissF. MolinaR. B. CakirliV. H. PhongT. Kurtukian NietoY. TakeiE. GaniogluS. GrévyN. FukudaB. BlankToshiyuki SumikamaP. DoornenbalHiroyuki TakedaS. E.a. OrrigoT. GoigouxM. TanakaP. AguileraA. I. MoralesA. Montaner-pizásubject
PhysicsIsotope010308 nuclear & particles physicsFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]7. Clean energy01 natural sciencesSpectral lineNuclear physicsFragmentation (mass spectrometry)0103 physical sciencesNeutronNuclear Experiment (nucl-ex)Atomic physics010306 general physicsNuclear Experimentdescription
In an experiment with the BigRIPS separator at the RIKEN Nishina Center, the fragmentation of a $^{78}$Kr beam allowed the observation of new neutron-deficient isotopes at the proton drip-line. Clean identification spectra could be produced and $^{63}$Se, $^{67}$Kr, and $^{68}$Kr were identified for the first time. In addition, $^{59}$Ge was also observed. Three of these isotopes, $^{59}$Ge, $^{63}$Se, and $^{67}$Kr, are potential candidates for ground-state two-proton radioactivity. In addition, the isotopes $^{58}$Ge, $^{62}$Se, and $^{66}$Kr were also sought but without success. The present experiment also allowed the determination of production cross sections for some of the most exotic isotopes. These measurements confirm the trend already observed that the empirical parameterization of fragmentation cross sections, EPAX, significantly overestimates experimental cross sections in this mass region.
year | journal | country | edition | language |
---|---|---|---|---|
2016-06-01 |