microscopic vs macroscopic cross section

1) Evaluation of total, elastic, inelastic and reaction cross sections with the experimental data and the microscopic optical model calculation. (2) 

Neutron Cross-Sections,Neutron Density and Neutron Flux 3.1 MODULE OVERVIEW 2 3.2 MODULE OBJECTIVES 3 3.3 THE MICROSCOPIC CROSS-SECTION 3 3.4 MICROSCOPIC CROSS-8ECTIONSOF THE FISSILE ISOTOPES7 3.5 THE MACROSCOPIC

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He explains: “A microscopic cross section looks like brickwork, with flat, hexagonal tablets of a crystalline, calcium carbonate mineral stacked in neat layers. jw The distinction between macroscopic and microscopic cross - section is that the former is a property of a specific lump of material (with its density), while the latter is an intrinsic property of a type of nuclei.

In this study, the total thermal neutron macroscopic and microscopic cross sections of. V, Co, Cu, In, Dy and Au were measured using neutron self-absorption 

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Answer: Current is flow of charges across a point along a given point along the length of conductor / a point in circuit. This current may or may not be uniform across the cross section of conductor. If we consider the whole cross section of conductor, and look at

While the microscopic cross-sectionconveysinformationabout the probabilities ofscattering, absorption orfission for an individual nucleus, the calculation ofthe rates ofthese processes for the reactor as a whole involves, in addition. the numbers of atoms ofeachmaterial perunit volume ofthereactor.

rather than the initial translational velocity. Note that we refer here to the cross section at total energy E, whereas in Eq. (1) the cross section is written as a function of the collision velocity. There is a one-to-one correspondence between the two independent variables, since v = (2µE c) 1/2 = [2µ(E −ε i)] 1/2

Microscopic cross-sections (σ) are given for each nuclide usually in units of barns, where 1 b = 1 x 10 -24 cm 2. It is essentially the effective area for the particular reaction. The macroscopic cross-section (Σ) has units of cm -1 is derived from the microscopic section according to Σ = N σ, where N is the atomic density of a particular nuclide.

The coherent and incoherent parts of the elastic scattering cross section are The corresponding microscopic cross sections are obtained as σc = 4π bc.