Comparing de Broglie Wavelength to Particle Size

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SUMMARY

The discussion centers on the relationship between the de Broglie wavelength (λ) and particle size in the context of quantum mechanics. The participant utilized de Broglie's relation and the Uncertainty Principle to analyze the problem, concluding that the de Broglie wavelength can be both larger and smaller than the particle size, depending on the particle's momentum. The participant referenced high-energy proton beams probing structures on the order of femtometers (fm), emphasizing the relevance of particle size in quantum mechanics as described in Resnick Halliday's physics textbook.

PREREQUISITES
  • Understanding of de Broglie's wavelength equation
  • Familiarity with the Heisenberg Uncertainty Principle
  • Basic knowledge of quantum mechanics and particle physics
  • Concept of momentum in relation to particle size
NEXT STEPS
  • Study the implications of the Heisenberg Uncertainty Principle in quantum mechanics
  • Explore the de Broglie wavelength equation in greater detail
  • Investigate the behavior of high-energy particles in quantum physics
  • Examine the significance of femtometer-scale measurements in particle physics
USEFUL FOR

Students of physics, particularly those studying quantum mechanics, particle physicists, and educators looking to deepen their understanding of the relationship between particle size and wave properties.

neelakash
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Homework Statement



It is an MCQ problem:
How does the de Broglie wavelength λ associated with a particle compare to the size of the particle?
(A) λ must be greater than the particle
(B) λ must be less than he particle
(C) λ could be larger and smaller than the particle

Homework Equations



I have used de Broglie's relation and Uncertainty principle.

The Attempt at a Solution



∆x ∆p> h

or, ∆x>(h/∆p)~λ as ∆p~p and ∆x is the particle's size in crude terms...

Please check and tell me if I am correct
 
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Use thet equation for the de Broglie wavelength, or just just use logic.
How could the de Broglie wavelength depend on the size of the particle?
 
It could depend possibly in the way I showed...
Think of high energy proton beam probing very fine structure...say of the order of picometer or fm

fm is the order of classical proton picture~ nuclear dimension...

It is a problem from Resnick Halliday and I do not find any reason to suspect this problem...
 

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