why are anti-stokes lines generally weaker than stokes lines in vibrational raman spectra?
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why are anti-stokes lines generally weaker than stokes lines in vibrational raman spectra?
Q. Explain the difference between Rayleigh, Stokes Raman and anti-Stokes Raman scattering.
ss known as Raman shiftipg, Raman scattering may be used to extend the spectrum able from a laser source. Focusing a laser in a gas ell illed with high pressure 45 In a process ht availabl of lig 2(g) vibrational frequency of H2(v = 4155 cm-). For a Nd:YAG laser operating at 532 nm/calculate the wavelengths of the first three Stokes and anti-Stokes lines. For those that lie in the visible gop region of the electromagnetic spectrum, what color are...
Show explicitly what lines will occur in a Raman spectrum in which the vibrational number of the molecule changes from v=0 to v=1. Then describe in qualitative terms how this spectrum differs from a vibrational-rotational spectrum.
(b) The rotational Raman spectrum of 1 N2 (m(N) - 14.0031u) shows a series of Stokes lines separated by 1.4567 cm, when it is exposed to monochromatic laser radiation with wavelength of 156 nm. (i) Derive the energy separation expression of the J 3 the pure rotational Raman spectrum of 1N2 1 transition in (i) Calculate the frequency of the above transition in the pure rotational Raman spectrum of 1"N2. 4 (b) The rotational Raman spectrum of 1 N2 (m(N)...
In a rotational/vibrational Raman spectra of "cN you observed a very intense peak Problem 4 at 3014.2 cm Surrounding this peak are tow lower intensity peaks separated by 18.25 cm Assuming the molecule behaves like a harmonic oscillator and rigid rotor calculate: A) the vibrational wavenumber, V, of the CN bond B) e rotational constant, B C) (4 pts) the bond length of CN. In a rotational/vibrational Raman spectra of "cN you observed a very intense peak Problem 4 at...
Why are molecular absorbance spectra broad, while atomic absorbance spectra are narrow (“lines”)? What are the major components of an absorbance instrument and what are their roles in spectral acquisition? Are absorbance measurements more qualitative or quantitative in nature (what useful information can we get from them)?
30. Why are the Balmer lines in the spectra of giant stars narrower than those for main-sequence stars? 31. Binary stars are [common, very rare]. 32. Binary stars allow us to determine what very important property of stars? 33. In a binary system the center of mass lies closer to the [more massive, less massive] star. 34. What type of star is Sirius B? [main sequence, white dwarf, giant] 35. Why does a spectroscopic binary system only allow us to...
Please help me with these questions, thank you 4. Why are virus generally more difficult to detect than other groups of organisms? 5. W hy are anti-cancer drugs and anti-fungal drugs generally more toxic than antibiotics? 6. Against which population of disease producing organisms are antibiotics most effective? 7. BONUS. A gram negative organism is placed in a solution of distilled water and penicillin. What would you predict the outcome to be? Explain.
6. Why are unions today weaker than they used to be? B) Do you think workers are better off with unions organized across markets like they are in Europe (as in everyone in particular professions are automatically part of that union, guaranteeing negotiations for all workers of the same filed across markets)? Answer:
Which of these might be responsible for why a moleculer metal salt spectra is broader than a hydrogen atomic spectra? More than one may apply. Overlapping bands caused by multiple transitions Additional ions formed in the flame More energy from the flame causing more emission Additional molecular species formed in the flame The electrons transition between levels faster in the hydrgen lamp Additional metals formed in the flame