Li Zhen-Yu

Systematic analysis of DJ(2580), D*J(2650), DJ(2740), D*J(2760), DJ(3000) and D*J(3000) in the D meson family*

In this work, we tentatively assign the charmed mesons DJ(2580), D*J(2650), DJ(2740), D*J(2760), DJ(3000) and D*J(3000) observed by the LHCb collaboration according to their spin, parity and masses, then systematically study their strong decays to ground state charmed mesons plus pseudoscalar mesons with the 3P0 decay model. Based on these studies, we assign the D*J(2760) as the state, the D*J(3000) as the or state, the DJ(3000) as the or state in the D meson family. As a byproduct, we also study the strong decays of the states etc, which will be valuable in searching for the partners of these D mesons.

AMS Measurement of 53 Mn at CIAE

The long-lived isotope 53Mn cosmogenically produced in situ is a very useful indicator for geochronological dating. A new 53Mn accelerator-mass-spectrometry (AMS) measurement method is developed based on the HI-13 Tandem Accelerator and ΔE-Q3D detection system at China Institute of Atomic Energy. The performance of 53Cr isobar separation and suppression is tested by a series of 53Mn standards and commercial MnO samples. The results show that the ΔE-Q3D detection system brought about an overall suppression factor of more than 107 for the interfering isobar 53Cr.

Progress in AMS Measurement of 182Hf at CIAE

Accelerator mass spectrometry (AMS) is one of the most promising methods to detect minute amounts of 182Hf. However, the sensitivity of 5 × 10−11 for 182Hf/180 Hf obtained previously by the AMS method at China Institute of Atomic Energy (CIAE) cannot meet the requirement of some applications. We present some new improvements of measurement method for AMS measurement of 182Hf at the CIAE HI-13 tandem accelerator system. As a result, a sensitivity of 1.0 × 10−11 for 182Hf/180 Hf is achieved.

Developing AMS measurement of59Ni at CIAE

Accelerator mass spectrometry (AMS) measurement of

AMS Measurement of 36Cl with a Q3D Magnetic Spectrometer at CIAE

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Recent progress in AMS measurement of 182Hf at the CIAE

Ni has been established at CIAE with the HI-13 tandem accelerator and the recently developed

Tensor force effect on single-proton energy levels of oxygen isotopes

\Delta E

Further study on highly sensitive AMS measurement of 53Mn

-Q3D detection system.

A first attempt to measure 92Nb/93Nb ratios with Accelerator Mass Spectrometry

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Application of wavelet transform in -ray spectra analysis

Ni standard and commercial NiO samples were measured to check the performance of the