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Absolute metastable atom-atom collision cross section measurements using a magneto-optical trap
K J Matherson1, R D Glover, D E Laban
1Centre for Quantum Dynamics, Griffith University, Nathan QLD 4111, Australia.
The Review of Scientific Instruments
|August 4, 2007
Summary
We developed a new method to measure collision cross sections for metastable neon atoms. This technique was used to determine the cross section for neon atoms colliding with argon, yielding 556+/-26 A(2).
Area of Science:
- Atomic physics
- Quantum mechanics
- Collision cross sections
Background:
- Metastable atoms are crucial in various physical and chemical processes.
- Measuring collision cross sections provides fundamental insights into atomic interactions.
Purpose of the Study:
- To introduce a novel technique for measuring absolute total collision cross sections of metastable neon atoms.
- To perform the first measurement of this kind using trapped metastable neon atoms.
Main Methods:
- Utilizing the decay rate of trapped metastable neon atoms.
- Observing collisions between trapped (3)P(2) metastable neon atoms and room temperature ground state argon atoms.
Main Results:
- Successfully measured the absolute total collision cross section for metastable neon-argon interactions.
- Obtained a cross section value of 556+/-26 A(2).
Conclusions:
- The new technique provides a reliable method for determining collision cross sections of metastable atoms.
- The measured cross section offers valuable data for understanding neon-argon interactions at the atomic level.
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