China's first pulsed neutron source

Chen, Hesheng; Wang, Xun-Li

doi:10.1038/nmat4655

Cited by 140 publications

(63 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The samples were loaded in a vanadium sample holder and then installed in the liquid helium cryostat that can generate temperature down to 3 K. The neutron powder diffraction data were collected at both 300 and 3 K. At GPPD, samples were loaded in 9.1 mm diameter vanadium cans and neutron diffraction patterns were collected at room temperature with wavelength band from 0.1 to 4.9 Å. It is worth noting that the CSNS is China's first pulsed neutron source and GPPD is the first TOF neutron powder diffractometer at CSNS [23] [24] , which has been constructed very recently. The program FULLPROF [25] was used for the Rietveld refinement of the crystal structures of the compounds.…”

Section: Structural and Magnetic Properties Characterizationmentioning

confidence: 99%

Insight into the origin of lithium/nickel ions exchange in layered Li(NixMnyCoz)O2 cathode materials

et al. 2018

Self Cite

View full text Add to dashboard Cite

In layered LiNixMnyCozO2 cathode material for lithium-ion batteries, the spins of transition metal (TM) ions construct a two-dimensional triangular networks, which can be considered as a simple case of geometrical frustration. By performing neutron powder diffraction experiments and magnetization measurements, we find that long-range magnetic order cannot be established in LiNixMnyCozO2 even at low temperature of 3 K. Remarkably, the frustration parameters of these compounds are estimated to be larger than 30, indicating the existence of strongly frustrated magnetic interactions between spins of TM ions. As frustration will inevitably give rise to lattice instability, the formation of Li/Ni exchange in LiNixMnyCozO2 will help to partially relieve the degeneracy of the frustrated magnetic lattice by forming a stable antiferromagnetic state in hexagonal sublattice with nonmagnetic ions located in centers of the hexagons. Moreover, Li/Ni exchange will introduce 180°s uperexchange interaction, which further relieves the magnetic frustration through bringing in new exchange paths. Thus, the variation of Li/Ni exchange ratio vs. TM mole fraction in

show abstract

Section: Structural and Magnetic Properties Characterizationmentioning

confidence: 99%

Insight into the origin of lithium/nickel ions exchange in layered Li(NixMnyCoz)O2 cathode materials

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…The China Spallation Neutron Source (CSNS) project has started its beam commissioning and is expected to put into service in spring 2018 [1,2,3]. It will be among the most powerful spallation neutron sources in the world, with 100 kW in Phase one and 500 kW in Phase two.…”

Section: Introductionmentioning

confidence: 99%

Energy-resolved fast neutron resonance radiography at CSNS

Tan

Tang

Jing

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

The white neutron beamline at the China Spallation Neutron Source will be used mainly for nuclear data measurements. It will be characterized by high flux and broad energy spectra. To exploit the beamline as a neutron imaging source, we propose a liquid scintillator fiber array for fast neutron resonance radiography. The fiber detector unit has a small exposed area, which will limit the event counts and separate the events in time, thus satisfying the requirements for single-event time-of-flight (SEToF) measurement.The current study addresses the physical design criteria for ToF measurement, including flux estimation and detector response. Future development and potential application of the technology are also discussed.

show abstract

“…China Spallation Neutron Source (CSNS) is a large scientific facility under construction, which is developed mainly for multidisciplinary research on material characterization by using neutron scattering techniques [23]- [25] and expected to be completed in early 2018. It consists of a 1.6-GeV proton accelerator and neutron producing targets.…”

Section: Introductionmentioning

confidence: 99%

Possible atmospheric-like neutron beams at CSNS

Zhang

et al. 2018

Radiation Physics and Chemistry

View full text Add to dashboard Cite

China Spallation Neutron Source (CSNS) will start commissioning in early 2018. The neutron spectra from the tungsten target bombarding by 1.6 GeV proton beam are very wide, namely white neutron spectra. Two white neutron beams schemed by CSNS are simulated by FLUKA. And the beam spectrum and intensity comparisons with other neutron sources in service are made. The fidelity of neutron spectra of these two whiteneutron beam lines for chip irradiation experiments are estimated. The CSNS atmosphericlike neutron beams will be the first white neutron beam lines in China and the most intensive ones in a few years suitable to carry out the accelerated test experiments of neutron single event effect in the world.

show abstract

China's first pulsed neutron source

Cited by 140 publications

References 6 publications

Insight into the origin of lithium/nickel ions exchange in layered Li(NixMnyCoz)O2 cathode materials

Insight into the origin of lithium/nickel ions exchange in layered Li(NixMnyCoz)O2 cathode materials

Energy-resolved fast neutron resonance radiography at CSNS

Possible atmospheric-like neutron beams at CSNS

Contact Info

Product

Resources

About