Study of condensational growth of water droplets by Mie resonance spectroscopy

Journal Article · Tue Mar 31 23:00:00 EST 1987 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.26.001282· OSTI ID:6725685

Fung, K H; Tang, I N; Munkelwitz, H R

An optical technique using MIE resonance scattering spectroscopy to monitor the growth of a saline solution droplet is presented. This technique utilizes a quadrupole particle trap to suspend a charged NaCl solution droplet in water vapor environment and a CO/sub 2/ laser to momentarily perturb the droplet-vapor equilibrium. The condensational growth of this droplet is monitored by means of multiple Mie resonances observed at right angle sccattering. A least-squares fit, used to evaluate the condensation coefficient of water, shows that the value tends to approach unity. In addition, this new approach reduces the error in dry salt size measurement to <1%.

• Research Organization: Brookhaven National Laboratory, Department of Applied Science, Environmental Chemistry Division, Upton, New York 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6725685
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 26:7; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
BNL
CHLORIDES
CHLORINE COMPOUNDS
DISPERSIONS
DROPLETS
DROPWISE CONDENSATION
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
INELASTIC SCATTERING
LASER SPECTROSCOPY
LEVITATION
LIGHT SCATTERING
MIXTURES
MONITORING
NATIONAL ORGANIZATIONS
PARTICLES
RESONANCE SCATTERING
SCATTERING
SODIUM CHLORIDES
SODIUM COMPOUNDS
SOLUTIONS
SPECTROSCOPY
US AEC
US DOE
US ERDA
US ORGANIZATIONS
VAPOR CONDENSATION
VAPORS
WATER VAPOR