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372 Matching Results
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Comparison between phase shift derived and exactly calculated nucleon--nucleon interaction matrix elements. [Tables]
A comparison is made between matrix elements calculated using the uncoupled channel Sussex approach to second order in DWBA and matrix elements calculated using a square well potential. The square well potential illustrated the problem of the determining parameter independence balanced with the concept of phase shift difference. The supersoft core potential was used to discuss the systematics of the Sussex approach as a function of angular momentum as well as the relation between Sussex generated and effective interaction matrix elements. In the uncoupled channels the original Sussex method of extracting effective interaction matrix elements was found to be satisfactory. In the coupled channels emphasis was placed upon the /sup 3/S/sub 1/-/sup 3/D/sub 1/ coupled channel matrix elements. Comparison is made between exactly calculated matrix elements, and matrix elements derived using an extended formulation of the coupled channel Sussex method. For simplicity the potential used is a nonseparable cut-off oscillator. The eigenphases of this potential can be made to approximate the realistic nucleon-nucleon phase shifts at low energies. By using the cut-off oscillator test potential, the original coupled channel Sussex method of determining parameter independence was shown to be incapable of accurately reproducing the exact cut-off oscillator matrix elements. The …
Date:
January 1, 1975
Creator:
Gregersen, A. W.
System:
The UNT Digital Library
High statistics study of omega$sup 0$ production at 6 GeV/c
The spin-projected cross sections for $omega$$sup 0$ production at 6 GeV/ c were measured in a counter-spark chamber experiment at the Zero Gradient Synchrotron of Argonne National Laboratory. Results are presented for a sample of 25,000 $omega$$sup 0$ events, and critical tests are shown for any residual background. The reaction is dominated by the s-channel natural-parity helicity one projection (rho$sub 11$ + rho/sub 1-1) dsigma/dt which shows a turnover in the forward direction and no strong dip at t = 0.6 (GeV/c)$sup 2$. The unnatural- parity helicity-zero cross section rho$sub 00$ dsigma/dt shows no forward turnover suggesting a sizeable helicity-nonflip contribution. Comparisons are made with the predictions of a Regge exchange model with absorptive corrections. (auth)
Date:
January 1, 1975
Creator:
Shaevitz, M.H.
System:
The UNT Digital Library
High temperature deformation behavior of cemented carbide cutting tools
None
Date:
January 1, 1975
Creator:
Baldoni, J.G. II
System:
The UNT Digital Library
Nuclear decay scheme studies of 30-h $sup 131$Te/sup m/, 25-min $sup 131$Te/ sup g/, and 55.5-min $sup 105$Cd
None
Date:
January 1, 1975
Creator:
Jackson, S.V.
System:
The UNT Digital Library
Pi-meson absorption on the deuteron
None
Date:
January 1, 1975
Creator:
Goplen, B.
System:
The UNT Digital Library
Radiochemical studies of some low- and medium-energy nuclear reactions produced by accelerated tritons, deuterons, and protons
None
Date:
January 1, 1975
Creator:
Casella, V.R.
System:
The UNT Digital Library
Single atom imaging in high resolution electron microscopy
None
Date:
1975~
Creator:
Chiu, W.
System:
The UNT Digital Library
Static equilibria of the interstellar gas in the presence of magnetic and gravitational fields
None
Date:
January 1, 1975
Creator:
Mouschovias, T.C.
System:
The UNT Digital Library
Analysis and design of a pyrotechnic-powered self-stopping actuator
None
Date:
January 10, 1975
Creator:
Kopytoff, V.
System:
The UNT Digital Library
Effect of hydrogen on the creep properties of vanadium, niobium, and molybdenum
None
Date:
February 1, 1975
Creator:
Mather, J.C.
System:
The UNT Digital Library
Heat content of liquid cerium by levitation calorimetry
None
Date:
February 1, 1975
Creator:
Kuntz, L.K.
System:
The UNT Digital Library
Isotope Separation by Laser Deflection of an Atomic Beam
None
Date:
February 1, 1975
Creator:
Bernhardt, A. F.
System:
The UNT Digital Library
Nonequilibrium, two-phase critical discharge of nearly saturated and subcooled CCl$sub 3$F through short tubes
None
Date:
February 1, 1975
Creator:
Prisco, M.R.
System:
The UNT Digital Library
Single crystalline elastic constants of Al$sub 2$Cu and Zr$sub 2$Ni
None
Date:
February 1, 1975
Creator:
Eshelman, F.R.
System:
The UNT Digital Library
Superconductivity and the Kondo effect in quench-condensed films containing cerium
None
Date:
February 1, 1975
Creator:
Delfs, R.J.
System:
The UNT Digital Library
Thermodynamic study of phase stability in the thorium--copper equilibrium system
None
Date:
February 1, 1975
Creator:
Bailey, D. M.
System:
The UNT Digital Library
Study of the reaction $pi$$sup -$p $Yields$ eta n in the region of the N*(1688)
None
Date:
March 25, 1975
Creator:
Chaffee, R.B.
System:
The UNT Digital Library
Nonperturbative theory of single/multiphoton processes in atoms and molecules induced by intense laser fields
None
Date:
April 1, 1975
Creator:
Lau, A. M. F.
System:
The UNT Digital Library
Quantities of actinides in nuclear reactor fuel cycles
None
Date:
April 1, 1975
Creator:
Ang, K.P.
System:
The UNT Digital Library
Thermodynamic studies of Ga--In, Ga--Sb, and Ga--In--Sb liquid alloys by solid state electrochemistry with oxide electrolytes
None
Date:
April 1, 1975
Creator:
Pong, R.
System:
The UNT Digital Library
System of coils for increasing the volume of homogeneous field between the parallel pole faces of an electromagnet
None
Date:
April 14, 1975
Creator:
Nelson, D.H.
System:
The UNT Digital Library
Duality property for a hermitian scalar field
None
Date:
April 28, 1975
Creator:
Bisognano, J.J.
System:
The UNT Digital Library
Peripheral nucleon--antinucleon production by 13 GeV/c pions
None
Date:
April 30, 1975
Creator:
Dulude, R. S. & Gaidos, J. A.
System:
The UNT Digital Library
Absolute Continuity and the Integration of Bounded Set Functions
The first chapter gives basic definitions and theorems concerning set functions and set function integrals. The lemmas and theorems are presented without proof in this chapter. The second chapter deals with absolute continuity and Lipschitz condition. Particular emphasis is placed on the properties of max and min integrals. The third chapter deals with approximating absolutely continuous functions with bounded functions. It also deals with the existence of the integrals composed of various combinations of bounded functions and finitely additive functions. The concluding theorem states if the integral of the product of a bounded function and a non-negative finitely additive function exists, then the integral of the product of the bounded function with an absolutely continuous function exists over any element in a field of subsets of a set U.
Date:
May 1975
Creator:
Allen, John Houston
System:
The UNT Digital Library