Doppler spectral line broadening is caused by the fact that the velocity of atoms or molecules...

Doppler spectral line broadening is caused by the fact that the velocity of atoms or molecules relative to the observer follows a Maxwell distribution. The effect is dependent on temperature. Hence it serves as a thermometer to determine the temperature of hot gases, such as in distant stars as well as the relative motion of the light source (away or approaching) the Earth observer. Derive the distribution of the intensity of spectral line and show how the line width is related to the temperature.

Expert Solution

genius_generous answered 1 year ago

Explain why the temperature of star is related to the broadening of a spectral line from...

Explain why the temperature of star is related to the broadening of a spectral line from the star and if a broader spectral line indicates a cooler or hotter star.

Explain why the broadening of a spectral line from a distant spiral galaxy is related to...

Explain why the broadening of a spectral line from a distant spiral galaxy is related to the distance to the galaxy and how the Tulley-Fisher relationship determines this distance from the spectral lines broadening.

Explain the following terms related to atomic emission linewidth: Doppler broadening, Uncertainty (lifetime) broadening, Pressure broadening.

Which spectral lines in the emission spectrum of hydrogen atoms can be observed if the atoms...

Which spectral lines in the emission spectrum of hydrogen atoms can be observed if the atoms are excited by electrons with kinetic energy E_kin = 13.3eV?

For triatomic molecules (i.e., molecules that contain three atoms) such as difluorine monoxide, F2O, there are...

For triatomic molecules (i.e., molecules that contain three atoms) such as difluorine monoxide, F2O, there are only two possible molecular geometries, linear or bent. a. Draw the Lewis structure for F2O (O is the central atom), and predict the molecular geometry using the VSEPR model. b. Could infrared spectroscopy be used to confirm the molecular geometry that is predicted using the VSEPR model? That is, could the infrared spectrum for F2O be used to determine whether the molecule is linear...

In the Bohr model, the Paschen series of spectral lines is caused by radiation absorbed or...

In the Bohr model, the Paschen series of spectral lines is caused by radiation absorbed or emitted as an electron transitions between the 2nd excited state and any higher excited state (3rd excited state and higher) of the hydrogen atom. The Paschen series spectral lines all involve infrared photons. a) Using the Bohr model, calculate the energy of the electron when it is in the 2nd excited state, in units of electron-Volts (eV). b) Calculate the energy of the electron...

QUESTION 2 The Doppler Effect may be used to determine the relative velocity of objects, such...

QUESTION 2 The Doppler Effect may be used to determine the relative velocity of objects, such as cars on the highway, or stars in the galaxy. When the OBSERVED frequency appears to increase, relative to the source, this means ... ... the source is moving AWAY FROM the observer. ... the source is moving at the same speed as the observer. ... the source is moving TOWARDS the observer. ... the source and the observer are motionless.

Discuss the nature of the three main types of atomic line broadening and include the relative...

Discuss the nature of the three main types of atomic line broadening and include the relative magnitude of broadening for each. Also, discuss what can be done, if anything, to reduce the magnitude of each type in specific experiments.

Does the extrasolar planet system with the largest doppler shift match the radial velocity curves with...

Does the extrasolar planet system with the largest doppler shift match the radial velocity curves with the highest amplitude? (ie. Planet System B goes with graph F)

1. a) Account for the fact that there are four different types of H atoms (four...

1. a) Account for the fact that there are four different types of H atoms (four non-equivalent H types) in propene. b) Explain why the NMR spectrum of cyclohexane,below, at room temperature gives one broad peak for all 12 protons instead of two seperate peaks for the axial and equatorial hydrogens

Question