Nuclear Reactor Physics Qestions me

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SUMMARY

This discussion addresses specific questions related to Nuclear Reactor Physics, focusing on the calculation of atom density of 18O in dry air and the impact of temperature on fission rates in a 1000 MWe Boiling Water Reactor (BWR). The atom density of 18O is derived from the mass density of dry air (0.0012 g/cm3) and the mass fraction of oxygen (0.23). Additionally, the fission rate at 800 °C is compared to the expected rate at 1000 °C, emphasizing the non-1/v cross-section behavior of Σf.

PREREQUISITES
  • Understanding of atomic mass and mole fraction calculations
  • Familiarity with nuclear fission principles and reactor physics
  • Knowledge of temperature effects on fission rates in reactors
  • Basic concepts of isotopic fractions and their applications
NEXT STEPS
  • Calculate atom density of isotopes using mass density and mole fraction
  • Explore the relationship between temperature and fission rates in nuclear reactors
  • Study the implications of non-1/v cross-sections in nuclear reactions
  • Investigate the isotopic composition of oxygen and its relevance in reactor physics
USEFUL FOR

Nuclear engineers, physics students, and researchers in reactor design and safety will benefit from this discussion, particularly those focusing on fission dynamics and isotopic analysis in nuclear systems.

cimgo1903
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Why don't you answer my Nuclear Reactor Physics Qestions? ...Please Help me

[/B]1 ) Dry air at normal temperature and pressure has a mass density of 0.0012 g/cm3 with a mass fraction of oxygen of 0.23. What is the atom density of 18O?


2) In the centre of the core of a 1000 MWe BWR, the observed fission rate is 1.7×1012 cm-3 s-1 and the observed temperature of the fuel is 800 oC. What will be the fission rate at the same location if the temperature is raised to 1000 oC? (Hint, Σf is a non- 1/v cross-section.)
 
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cimgo1903 said:
[/B]1 ) Dry air at normal temperature and pressure has a mass density of 0.0012 g/cm3 with a mass fraction of oxygen of 0.23. What is the atom density of 18O?
Please show work. Determine the mole fraction of oxygen in air. Then apply the isotopic fraction of 18O.
 

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