|dc.contributor.author||Pal, Hirendra Kumar||en
|dc.description.abstract||An attempt has been made in this paper to study the
intensity distribution of X- radiation scattered from
various substances. Employing heterogeneous primary
radiations extending over a wide range of wavelengths
and making proper corrections, the ratio Iφ/I₉₀ (where
means the intensity of the scattered radiation in a direction
making an angle φ with the primary beam) has been determined
experimentally for angles 0 = 20°, 30°, 40°, 60° and 150°.
The information obtained, as far as these experiments go,
may be summarised briefly as follows.||en
|dc.description.abstract||1. In the backward direction, φ=150°
(a) the experimental ratio Iφ/I₉₀, though
approximating to the value (1+ cos²φ) for long
waves, is invariably less than that given by
this simple law.
(b) For a particular wavelength, the deficiency of
the experimental ratio Iφ/I₉₀ below (1 + cos²φ)
is independent of the nature of the scattering
material (within experimental error).
(c) The deficiency of the experimental ratio Iφ/I₉₀
below (1 + cos²φ) increases as the wavelength
|dc.description.abstract||. In the forward direction
(a) The ratio Iφ/I₉₀, though approximating to the
value (1 + cos²φ) for short waves, is invariably
greater than that given by this simple law.
(b) For a particular wavelength, the excess of the
experimental ratio Iφ/I₉₀ over. (1 + cos²φ) , depends largely on the nature of the scattering
material, increasing with an increase in the
atomic number (or an average atomic number, as the
case may be) of the scattering material.
(c) For a particular scatterer, the excess of the
experimental ratio Iφ/I₉₀ over (1 + cos²φ)
decreases as the wavelength. decreases.
(d) For a particular wavelength and a particular
scatterer, the excess of the experimental ratio
Iφ/I₉₀ over (1 + cos²φ) decreases as the angle φ
|dc.description.abstract||In the backward direction, the intensity of scattering
from different substances agrees very closely with that
given by the quantum theory of Dirac, whereas in the
forward direction, the observed scattering is complic -ted
by interference effects and may be explained on the
|dc.publisher||The University of Edinburgh||en
|dc.relation.ispartof||Annexe Thesis Digitisation Project 2017 Block 16||en
|dc.title||A study of the energy distribution of scattered x-radiation||en
|dc.type||Thesis or Dissertation||en
|dc.type.qualificationname||PhD Doctor of Philosophy||en