Z. G. Hu

Mass Measurement of 45Cr and Its Impact on the Ca-Sc Cycle in X-Ray Bursts

Masses of neutron-deficient 58Ni projectile fragments have been measured at the HIRFL-CSR facility in Lanzhou, China employing the isochronous mass spectrometry technique. Masses of a series of short-lived Tz = –3/2 nuclides including the 45Cr nucleus have been measured with a relative uncertainty of about 10–6-10–7. The new 45Cr mass turned out to be essential for modeling the astrophysical rp-process. In particular, we find that the formation of the predicted Ca-Sc cycle in X-ray bursts can be excluded.

Different mechanism of two-proton emission from proton-rich nuclei 23 Al and 22 Mg

Two-proton relative momentum (q(pp)) and opening angle (theta(pp)) distributions from the three-body decay of two excited proton-rich nuclei, namely Al-23 --> p + p + Na-21 and Mg-22 --> p + p + Ne-20, have been measured with the projectile fragment separator (RIPS) at the RIKEN RI Beam Factory. An evident peak at q(pp) similar to 20 MeV/c as well as a peak in theta(pp) around 30 degrees are seen in the two-proton break-up channel from a highly-excited Mg-22. In contrast, such peaks are absent for the Al-23 case. It is concluded that the two-proton emission mechanism of excited Mg-22 is quite different from the Al-23 case, with the former having a favorable diproton emission component at a highly excited state and the latter dominated by the sequential decay process

Proton-proton correlations in distinguishing the two-proton emission mechanism of 23Al and 22Mg

The proton-proton momentum correlation functions (

The first test experiment performed at the electron cooler of storage rings in Lanzhou

C_{pp}(q)

Test of IMME in fp shell via direct mass measurements of TZ = -3/2 nuclides

) for kinematically complete decay channels of

7Be, 8B+208Pb Elastic Scattering at Above-Barrier Energies

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Two‐proton Halo and Two‐proton Emission Nucleus: 29S

Al

Quasi-elastic scattering of 10,11C and 10B from a natPb target

\rightarrow

Mass Measurements of Proton‐rich Nuclides at the Cooler Storage Ring at IMP

p + p +

Quantum Orbits: A Powerful Concept in Laser-Atom Physics

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