Direct observation of a Ramsauer--Townsend effect in positron--argon collisions
Journal Article
·
· Phys. Rev. Lett., v. 36, no. 11, pp. 580-584
Transmission measurements of the total scattering cross section for positrons of well-defined energy colliding with argon atoms in the energy range extending from 0.4 to 18 eV reveal a shallow minimum in the vicinity of 2 eV. The measured total cross section at the minimum is 2.4 x 10$sup -16$ cm$sup 2$. These measurements also reveal an abrupt increase in the total cross section above the threshold for positronium formation (9.0 eV). (AIP)
- Research Organization:
- Wayne State University, Detroit, Michigan 48202
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-031180
- OSTI ID:
- 4019900
- Journal Information:
- Phys. Rev. Lett., v. 36, no. 11, pp. 580-584, Journal Name: Phys. Rev. Lett., v. 36, no. 11, pp. 580-584; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*ARGON-- POSITRON-ATOM COLLISIONS
*POSITRON-ATOM COLLISIONS-- RAMSAUER EFFECT
640304* --Physics Research--Atomic
Molecular & Chemical Physics--Collision Phenomena
EV RANGE 01-10
EV RANGE 10-100
MILLI EV RANGE
N60400* --Physics (Atomic & Molecular)--Collision Phenomena
POSITRONIUM
TOTAL CROSS SECTIONS
*POSITRON-ATOM COLLISIONS-- RAMSAUER EFFECT
640304* --Physics Research--Atomic
Molecular & Chemical Physics--Collision Phenomena
EV RANGE 01-10
EV RANGE 10-100
MILLI EV RANGE
N60400* --Physics (Atomic & Molecular)--Collision Phenomena
POSITRONIUM
TOTAL CROSS SECTIONS