Published August 30, 1993
| Version v1
Journal article
Cold collisions of ground state 4He: Giant S-wave scattering cross sections
Creators
- 1. Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
Description
We have measured integral elastic cross sections for ground state 4He-4He scattering at collision energies from 1.35 to 0.5 K using a novel atomic beam apparatus built into a dilution refrigerator. Scattering is almost pure s wave, and is predicted to be enormous due to a possibly bound state near the continuum. The effective integral cross section ranges from 20 to 1000 A2 as collision energy is reduced in our experiment. These cross sections are in agreement with the values predicted using the latest analytical potential of Aziz and Slaman
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 71
- Journal Issue
- 9
- Journal Page Range
- p. 1343-1346.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25004635
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ATOM-ATOM COLLISIONS; ATOMIC BEAMS; ATTENUATION; BOLOMETERS; BOUND STATE; ELASTIC SCATTERING; EXPERIMENTAL DATA; GASES; GROUND STATES; HELIUM DILUTION REFRIGERATORS; HELIUM 4; INTEGRAL CROSS SECTIONS; PULSES; S WAVES; TARGETS; TIME-OF-FLIGHT METHOD
- Descriptors DEC
- ATOM COLLISIONS; BEAMS; COLLISIONS; CROSS SECTIONS; DATA; ENERGY LEVELS; EVEN-EVEN NUCLEI; FLUIDS; HELIUM ISOTOPES; INFORMATION; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; NUCLEI; NUMERICAL DATA; PARTIAL WAVES; REFRIGERATORS; SCATTERING; STABLE ISOTOPES