1 - IAEA Nuclear Data Services

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^* ..^^y.,Jlîli?i!giLJ.g^..i^J'A?_. Scattering Seattering - Law Measurements
W, Glaser, G. Ehret., P.v. Blanckenhagen, K.B. Renker, W» Schott
3.1.1 Zirconium Hydride
The evaluation of the generalized frequency distribution P(S>)
(B = ïr~m) for ZrH. o has been completed. The weight of the
acoustical part (ô- » 2? meV) is about 0.006, the total weight
of^p(fí) is about O.785 if only scattering from H is considered.
This distribution describes integral thermalization properties
in a satisfactory way.
Lit.: W. Glaser, KFK-Report 602 (1967)
3 % 1.2 Water and Ice
G. Ehret, Thesis, Karlsruhe (1968)
The scattering of cold neutrons (E = 5 meV) from H_0 at temperatures
0 o 2
of -12 and +23 G has been measured at angles between 16 V and 110 .
f(S>) has been extracted from these data using an iterative correction
for multiple scattering. The quasielastic scattering from H?0
(23 , ^5 and 75 C) and D_0 (23 C) has been analysed quantitatively
using the LEAP formalism for corrections.
Lit.: P. v. Blanckenhagen and K.B. Renker, Phys. Verh. DPG(7),
1967, 532
3.1.3 Liquid _and Solid Hydrogen
.. ^
The double differential scattering cross sections ,..•,„ f liquid
H (T=19,8%) and solid H (T= i ft i f°K) have been measured with
incident energies of 21,8 and 87 meV for scattering angles between
20 and 150 . The results deviate considerably from the gas model
calculations and have been interpreted with a spectral density $>(&).
Lit.: W. Schott and W. Gláser, Phys. Verh. DPG(7), 1967, 53^