Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Franck Hertz Experiment – Mercury

P6241B
Observe the spectral lines of mercury atoms.

  • Includes all major components
  • Observe energy levels on an oscilloscope
The mercury atoms are enclosed in a tetrode with cathode, grid-type control electrode, acceleration grid and target electrode. The control grid ensures a virtually constant emission current of the cathode. An opposing voltage is applied between the acceleration grid and the target electrode. When the acceleration voltage U between the cathode and the acceleration grid is increased, the target current I corresponds closely to the tube characteristic once it rises above the opposing voltage. As soon as the electrons acquire sufficient kinetic energy to excite the mercury atoms through inelastic collisions, the electrons can no longer reach the target, and the target current drops. At this acceleration voltage, the excitation zone is directly in front of the excitation grid. When the acceleration voltage is increased further, the excitation zone moves toward the cathode, the electrons can again accumulate energy on their way to the grid and the target current again increases. Finally, the electrons can excite the mercury atoms once more, the target current drops again, and so forth. The I(U) characteristic thus demonstrates periodic variations, whereby the distance between the minima ΔU = 4.9 V corresponds to the excitation energy of the mercury atoms from the ground state to the first state.

Hg Franck-Hertz tube
Socket for Hg Franck-Hertz tube, with DIN connector
Electric oven for 230 V
Franck-Hertz operating device
Temperature probe NiCr-Ni, 1.5 mm
Oscilloscope 30 MHz, two-channel, analogous
Screened cable BNC/4 mm plug (2)



   
 

ORDER

Item # Description Unit Availability Price Quantity
470220-114 Franck Hertz Experiment – Mercury
Kit of 1 Retrieving

PRODUCT RESOURCES

WRITE A REVIEW

Need help?

  • Whatever you have to say, positive or negative, is important to us.
  • Providing feedback takes only seconds.
  • Your feedback will be made available to the public on the web.

SARGENTWELCH.com will publish your name as sargentwelch.com user.
You can use this name, or edit and save a nickname.
We recommend authors use their first and last initial.

Please confirm your profession

Example: Education

Please confirm your role

Example: Teacher

Please confirm your location

Example: New York, NY

REVIEWS (0)

Total Ratings: 0
Avg. Ratings: 0.0 out of 5

Sort all by:

 
Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty