From the decay of a 99keV γ ray which corresponds to the 5/2 -→1/2 - transition in the daughter nucleus 129Nd following the (EC+β +) decay of 129Pm, the half-life of 129Pm was determined to be 2.4(6)s.
The high gain X-Y position sensitive PPAC with delay ca-ble groupod readout,the scintillation foil time pickup detector,focusing with carving ellipse surface,transversefield IC,the large area two-dimensional position sensitive scintillator with PMT matrix readout,the comptonsuppressed HPGe γ ray detectors,twinlongitudinal field IC are major components,Nowadays,this setup hasbeen installed at RIBLL terminal. The porformance measurements and test experments are in progress. (
A kind of multitracer has been prepared from the interaction of selenium with 25MeV/A 40 Ar ions. By using off-line gamma ray spectrometry, it is identified that the multitracer contain 47 kinds of radioactive nuclides belonging to 24 elements.
Making use of cheap natural zirconite,CaCO_3 and TiO_2 as raw materials,adopting high temperature solid-state reaction,the study of solidification of simulated radioactive incineration ash was carried out with the zircondite and sphene by means of volume-densities measurement,X ray diffraction(XRD) and scanning electron microscopy(SEM).
he mechanism of thermoelastic martensitic transformation and the martensitic structure in NiAlMn high temperature shape memory alloy are discussed in detail on base of room temperature Xray diffraction,then the reason of martensitic structural ordering is pointed out.
The Calderón reproducing formula, windowed X-ray transforms, and radon transforms in LP-spaces
The case k=1, μ∈? corresponds to the exponential X-ray transform arising in single photon emission tomography.
Here, we report using the estrogen receptor that the location of drugs in x-ray crystal structures of the receptors matches closely their predicted spatial locations in the DNA.
Different from rational quadratic Bézier curves, the value is generally related with the location of the ray, and the necessary and sufficient condition of the ratio being independent of the ray's location is showed.
one vertex, the points that the ray from the initial vertex intersects respectively with the curve segment, the line connecting the segments end points, and the line connecting the two neighboring vertexes.