Using Wien formula for maximum of the black body spectrum maxT = 2.9×10 3 mK est

Question

Using Wien formula for maximum of the black body spectrum maxT = 2.9×103 mK estimate the following:

a) The tritium (symbol T or 3H) is unstable isotope of the Hydrogen containing one proton, two neutrons, and one electron. What is the temperature required to ionize the tritium into the T+ ion by blackbody radiation?

b) The surface temperature of the -Velorum star is about 54,000 K. This is about 9 times higher than the surface temperature of the Sun. How does the radiation spectra of -Velorum differ from the Sun’s radiation spectra? Describe a change in the intensity, wavelength, and the frequency of the maximum of their spectra. Do both stars have their maximal radiation at the visible range of the spectra?

c) Does the tritium in outer atmosphere of -Velorum star present in its ionized (T+) or neutral (T) forms? Explain your answer.

d) What is the second longest wavelength in the Balmer lines (n=2) of tritium? How does this energy compares with the emission of He+ ion corresponding to the electron transition from the 8 to 4 orbit? Can one use these spectral lines to identify He+ from tritium?

e) Can one use the emission spectra to identify Hydrogen from its two isotopes: deuterium (2H) and tritium (3H)? Explain your answer.

Explanation / Answer

Using Wien formula for maximum of the black body spectrum maxT = 2.9×10 3 mK est

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