Measuring the Line Spectra of Inert Gases and Metal Vapors using a Prism Spectrometer

The Measuring the Line Spectra of Inert Gases and Metal Vapors using a Prism Spectrometer apparatus is designed to observe and identify the emission spectra of inert gases and metal vapors. The experiment enables students to measure the angular deviation of spectral lines using a precision spectrometer with a goniometer and determine their corresponding wavelengths through calibration. It provides a practical understanding of atomic emission spectra, wavelength measurement, and optical spectroscopy. The setup can also be configured as a grating spectrometer for advanced diffraction experiments. Manufactured by Atico Export India.

Principle

When gases or metal vapors are excited electrically, they emit light at characteristic wavelengths that form unique line spectra. The emitted light passes through the spectrometer, where the angular deviation of each spectral line is measured. Using a calibration curve, the measured angles are converted into wavelengths, allowing identification of the emitting elements. The spectrometer may also be configured with a diffraction grating for wavelength analysis.

Objectives

• Observe the emission spectra of inert gases and metal vapors.
• Measure the angular position of spectral lines.
• Determine the wavelength of emitted spectral lines.
• Identify unknown elements using their characteristic spectra.
• Study the principles of optical spectroscopy.
• Understand wavelength measurement using a spectrometer.

System Components

Spectrometer with Goniometer :

• Quantity: 1

Helium Spectral Lamp :

• Quantity: 1

Cadmium Spectral Lamp :

• Quantity: 1

Housing for Spectral Lamps :

• Quantity: 1

Universal Choke :

• Supply Voltage: 230 V, 50 Hz
• Quantity: 1

V-Shaped Stand Base :

• Quantity: 1

Optional Spectral Lamps

Neon Spectral Lamp :

• Quantity: 1

Mercury-Cadmium Spectral Lamp :

• Quantity: 1

Thallium Spectral Lamp :

• Quantity: 1

Sodium Spectral Lamp :

• Quantity: 1

Precision Spectrometer :

• Equipped with an integrated goniometer for accurate angular measurements.

Multiple Spectral Sources :

• Supports observation of various inert gas and metal vapor emission spectra.

Accurate Wavelength Measurement :

• Calibration curve enables precise wavelength determination.

Grating Spectrometer Compatibility :

• Can be configured for diffraction grating experiments.

Educational Design :

• Ideal for studying atomic spectra, optical spectroscopy, and wavelength analysis.