PASCO Specialty & Mfg. SE-9639 User Manual Page 1

Instruction Manual012-14264AFranck-Hertz ExperimentModel SE-9639 Brolight Technology Co., Ltd

SE-9639 Franck-Hertz Experiment8012-14264A1. On the DC Current Amplifier, connect the special BNC-to-BNC cable between the port on the amplifier marke

Franck-Hertz Experiment Tunable DC (Constant Voltage) Power Supply I9012-14264ATunable DC (Constant Voltage) Power Supply I• Voltmeter: Displays volta

SE-9639 Franck-Hertz Experiment10012-14264A• Output: Output power.• Data Interface: Connect to the analog channels of the PASCO 850 Universal Interfac

Franck-Hertz Experiment Experiment Procedure 111012-14264AExperiment Procedure 1Adjust Operating Voltages1. Connect all the cables and cords as shown

SE-9639 Franck-Hertz Experiment12012-14264AManual Measurements1. Increase the accelerating voltage VG2K by a small amount (for example, 1 V). Record t

Franck-Hertz Experiment Questions13012-14264A2. Find the peak (or valley) positions which match the accelerating voltages labeled “V1, V2, V3, V4, V5,

SE-9639 Franck-Hertz Experiment14012-14264AExperiment Procedure 2Using a PASCO Interface and Data Acquisition SoftwareItems Needed*See the PASCO web s

Franck-Hertz Experiment Software Setup15012-14264A3. Connect a second 8-pin DIN Extension Cable from the 0 - 100V / 0 - 200V INTERFACE port on Power S

SE-9639 Franck-Hertz Experiment16012-14264A• Diff between Peaks = diff(1,[Trough Voltage (V)]) with units of (V)(This calculation calculates the volta

Franck-Hertz Experiment Analysis17012-14264A

®iiTable of ContentsEquipment List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1Limited Wa

SE-9639 Franck-Hertz Experiment18012-14264AAppendix A: General SpecificationsItem DescriptionSupply voltage: 110 – 120 V or 220 – 240 VSupply voltage

Franck-Hertz Experiment Appendix B: Teacher’s Notes19012-14264AAppendix B: Teacher’s NotesSample Data 1: Manual MeasurementsFilament voltage (V) = 3.5

SE-9639 Franck-Hertz Experiment20012-14264ATable 2: Peak and Valley VoltagesAnalysisObtain the value of argon atom’s first excitation potential (V0):V

Franck-Hertz Experiment Sample Data 2: Using a PASCO Interface21012-14264AUse both. The average of the accelerating voltages matching peak positions a

SE-9639 Franck-Hertz Experiment22012-14264AAnalysisObtain the value of argon atom’s first excitation potential: V0 = 11.44 V;Calculate the value of Pl

Franck-Hertz Experiment Appendix D: Product End of Life23012-14264ACopyright NoticeThe PASCO scientific manual is copyrighted and all rights reserved.

Instruction Manual012-14264A1012-14264AFranck-Hertz ExperimentSE-9639Equipment ListIncluded Equipment Model Quantity1. Tunable DC (Constant Voltage) P

SE-9639 Franck-Hertz Experiment2012-14264ARecommended ItemsLimited Warranty and Limitation of LiabilityThis Brolight product is free from defects in m

Franck-Hertz Experiment Electrical Symbols3012-14264A• Special note: If a dangerous voltage is applied to an input terminal, then the same voltage may

SE-9639 Franck-Hertz Experiment4012-14264AReplace the Argon Tube• Use a flat-blade screwdriver to remove the two small screws that hold the back plate

Franck-Hertz Experiment Introduction5012-14264AIntroduction In 1914, James Franck and Gustav Hertz discovered in the course of their investigations an

SE-9639 Franck-Hertz Experiment6012-14264AWhen an electron has an inelastic collision with an argon atom, the kinetic energy lost to the atom causes o

Franck-Hertz Experiment Connect Cables and Cords7012-14264AConnect Cables and Cords See the next page for numbered instructions about connecting cable