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Dartmouth

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Light Scattering

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Topics

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Prerequisites

Lab Activities

Students study Rayleigh scattering, Mie scattering, and the recently discovered enhancement of coherent scattering in the exact backward direction. The scatterers are uniform sized polystyrene spheres suspended in water.

Course Level

Senior

Student Handouts

Equipment

Number of set-ups available: 1

Per lab station:

1 Fluke 415B HV power supply
1 HP 7035B x-y recorder/pen
1 Spectra-Physics 120 He-Ne laser/power supply mounted on a metal base with post
1 PAR 121 lock-in amplifier
1 HV BNC cable (~1 meter long)
3 signal BNC cables (1 ~ 2 meters long; 2 ~ meter long)
2 BNC to banana (male) adapters
2 2 meter optical bench
1 1 meter optical bench
1 microscope optical objective/post
1 long focal length lense/holder and post
1 iris mounted on a post so that icris can be rotated in the vertical plane
1 ~2" X 4" piece of black construction paper/pin hole in the center
1 front surface mirror mounted on an adjustable orientation holder/post
1 black construction paper shield for the front surface mirror
1 platform for latex bead solutions/post
1 latex bead vial holder/shield and rubber band
1 half-silverd mirror on an adjustable orientation holder/post
1 lense/holder and post
1 rotating polarizing lense/post
9 optical bench mounts
1 photomultiplier/adjustable platform
1 laterally adjustable optical bench mount for photomultiplier
1 gear drive motor to sweep lateral adjustment on the above bench mount
1 motor drive switch box/D-cell battery
1 10 cycle chopper wheel
1 photogate time
1 ring stand (bar ~60 cm long)
3 standard ring stand clamps
2 metal bars (~0.5 in diameter; 1 ~ 25 cm long; 1 ~ 33" long)
1 flashlight
1 lamp on an extendable arm
1 Perkins-Elmer 552 spectrophotometer
1 Perkins-Elmer 561 strip chart paper
Perkins-Elmer 159-1003 strip chart paper
1 2 ml vial LB-3 latex beads (0.3 µ bead diameter)
2 2 ml vial LB-5 latex beads (0.5 µ bead diameter)
2 2 ml vial LB-6 latex beads (0.6 µ bead diameter)
1 2 ml vial LB-8 latex beads (0.8 µ bead diameter)
1 2 ml vial LB-3 latex beads (0.3 µ bead diameter)
100 ml beakers
distilled water
25 ml graduated cylinder
rectangular vials
glue on curette tops
Duco glue
plain paper
micropipets (10 µliters)
1 ml pipets
pins
vernier caliper
meterstick
ruler
1 HP 6215A power supply
1 banana lead

Notes


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