Gamma-ray attenuation for measuring cryogenic slush mixture density
نویسندگان
چکیده
منابع مشابه
Density wave system : slush or real glass
We show that the relaxational dynamics as exhibited in the enthalpy relaxation of the density wave compounds at very low temperatures (T<lK) is very similar to that one occuring in disordered systems such as glassy polymers or spin glasses. We discuss these similarities, as well as some pecularities, in the frame of secondary relaxational processes as genuine features of glass formers below the...
متن کاملMixture of Generalized Gamma Density-Based Score Function for Fastica
We propose an entirely novel family of score functions for blind signal separation BSS , based on the family of mixture generalized gamma density which includes generalized gamma, Weilbull, gamma, and Laplace and Gaussian probability density functions. To blindly extract the independent source signals, we resort to the FastICA approach, whilst to adaptively estimate the parameters of such score...
متن کاملMeasuring Cosmic Elements with Gamma-Ray Telescopes
Gamma-ray telescopes are capable of measuring radioactive trace isotopes from cosmic nucleosynthesis events. Such measurements address new isotope production rather directly for a few key isotopes such as Ti, Al, Fe, and Ni, as well as positrons from the β-decay variety. Experiments of the past decades have now established an astronomy with γ-ray lines, which is an important part of the study o...
متن کاملApplication of FLUKA code to gamma-ray attenuation, energy deposition and dose calculations
Background: In radiation therapy, water is the phantom material of choice, both for reference and for relative dosimetry measurements. Solid phantoms, however, are more useful for routine measurements because they tend to be more robust and easier to set up than water phantoms. Materials and Methods: FLUKA input data cards have been arranged in sequential order. A simple cylindrical geometry wi...
متن کاملAlternative soil particle-size analysis by gamma-ray attenuation
In 1992 a new method of soil particle-size analysis was introduced, which coupled sedimentation to gamma-ray attenuation. The theoretical possibility of an alternative for this method is here presented, which includes the necessity of sieving soil samples, but simpli®es the gamma-ray measurements. Advantages and disadvantages of this alternative are discussed. # 1999 Elsevier Science B.V. All r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
سال: 2005
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2004.10.092