6 research outputs found
High Precision Mass Measurements of Intermediate-mass Neutron-deficient Nuclei via MRTOF-MS
International audiencePrecision mass measurements of ^63Cu, ^64–66Zn, ^65–67Ga, ^65–67Ge, ^67As, ^79,81Br, ^79Kr, ^80,81Rb, and ^79,80Sr were performed with a multireflection time-of-flight mass spectrograph. The masses of these nuclides were determined by the single reference method using isobaric references. In order to obtain precise results, time-of-flight drift compensations were performed and a phenomenological fit function was employed. Consequently, in the case of ^65Ga, a mass uncertainty of 2.1 keV, corresponding to a relative precision of , was obtained and the mass value is in excellent agreement with the 2016 Atomic Mass Evaluation
Measurement of the proton Zemach radius from the hyperfine splitting in muonic hydrogen atom
Absolute optical absorption cross-section measurement of Rb atoms injected into superfluid helium using energetic ion beams
Magnetic Moment of the Isomeric State of Cu Measured with a Highly Spin-aligned Beam
International audienceThe magnetic moment of the isomeric state of the neutron-rich ^75Cu nucleus was measured using a highly spin-aligned beam produced via a two-step reaction scheme. In the experiment carried out at the BigRIPS at RIBF, we achieved to produce spin alignment reaching 30% by employing the one-proton removal from ^76Zn to produce ^75Cu. In the magnetic moment measurement, a method of time-differential perturbed angular distribution (TDPAD) was employed. Precession of the isomeric state with spin parity of 3/2^− was clearly observed with significance larger than 5σ in the TDPAD spectrum. The magnetic moment of the isomeric state of ^75Cu was determined to be μ = 1.40(6)μ_N