• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Vacuum Ultraviolet Spectroscopy and Photochemistry of Zinc
Vacuum Ultraviolet Spectroscopy and Photochemistry of Zinc

Dual-color total internal reflection fluorescence cross
Dual-color total internal reflection fluorescence cross

... fluorescence system for single-molecule coincidence analysis and fluorescence cross-correlation spectroscopy 共FCCS兲. As a performance analysis, we measured a synthetic DNA-binding assay, demonstrating this dual-color TIR-FCCS approach to be a suitable method for measuring coincidence assays such as ...
Exploring the Interatomic Forces between Tip and Single Molecules
Exploring the Interatomic Forces between Tip and Single Molecules

... We thus interpret our experimental results by the electric field that induces a dipole moment in the molecular legs. The conformational change is achieved by the electrostatic force acting on them in the presence of the electric field in the STM junction. To confirm this interpretation, the threshol ...
CHAPTER 9 ROTATIONAL DYNAMICS
CHAPTER 9 ROTATIONAL DYNAMICS

Unusual deprotonated alkynyl hydrogen bonding in metal
Unusual deprotonated alkynyl hydrogen bonding in metal

Characterization of Quinine and Its Determination
Characterization of Quinine and Its Determination

Fluorescence Spectroscopy
Fluorescence Spectroscopy

Integrated X-ray L Absorption Spectra. Counting Holes in Ni
Integrated X-ray L Absorption Spectra. Counting Holes in Ni

... as an alternate scale for the ordinate in Figure 2 (right axis). Since different band structure calculations differ by ∼0.2 in the number of holes,54 the calculated values have an error on the order of 15-20%, and when ∼10% experimental errors are also considered, this intensity-to-3d holes conversi ...
Ch11 - Rolling, Torque, and Angular Momentum
Ch11 - Rolling, Torque, and Angular Momentum

... Turbine with I = 2.5 kgm2;  = (40 rad/s3)t2 What is L(t) & L @ t = 3.0 seconds; what is t(t)? Copyright © 2012 Pearson Education Inc. ...
14 - the Research Group of Angelika Kühnle
14 - the Research Group of Angelika Kühnle

The secondary structure of guide RNA molecules
The secondary structure of guide RNA molecules

... transition (7"m-2) in the range of 10-11° C could also be detected and the hyperchromicities at 260 run were determined to vary between 15 and 20%. All four molecules displayed asymmetric peaks at lower temperatures (~20°C, see arrowheads in Fig. 2) suggesting multiple melting processes probably evi ...
Storage and Control of Optical Photons Using Rydberg
Storage and Control of Optical Photons Using Rydberg

... The future success of quantum technologies will depend on the ability to integrate components of different systems. Strongly interacting systems, such as ions [1,2] or superconductors [3] are ideal for processing, large ensembles for memory [4], and optical photons for communication [5]. However, in ...
Rotational Motion and Angular Momentum
Rotational Motion and Angular Momentum

The Chemistry of Excited States
The Chemistry of Excited States

Lower Diamondoids and Their Derivatives as Molecular Building
Lower Diamondoids and Their Derivatives as Molecular Building

Quantum Theory of Molecular Magnetism - cond
Quantum Theory of Molecular Magnetism - cond

Chapter 3 Chirality - diss.fu
Chapter 3 Chirality - diss.fu

... the direction of the polarization vector of electromagnetic fields by the same angle but in opposite directions. This behavior is called optical activity and it is connected to the phenomenon of chirality. Chiral substances show optical activity, hence, a pure enantiomer is optically active. A 50%:5 ...
Efficient Method to Perform Quantum Number Projection and
Efficient Method to Perform Quantum Number Projection and

7.2 Angular Momentum
7.2 Angular Momentum

On the physical interpretation of torsion
On the physical interpretation of torsion

... parameters, and to demonstrate that the physical origin of these torsion–rotation interaction terms in methanol lies primarily in structural relaxation with torsion. The less satisfactory agreement between theory and experiment for acetaldehyde requires further study. © 1999 American Institute of Ph ...
Solvent effects on excited state relaxation phenomena
Solvent effects on excited state relaxation phenomena

laser spectroscopy
laser spectroscopy

Low sticking probability in the nonactivated dissociation of N2
Low sticking probability in the nonactivated dissociation of N2

... indirect dissociative mechanisms are unambiguously supported by the experimental N2 / W共110兲 data. One of the first theoretical attempts to understand the dissociative dynamics of N2 on the W共110兲 surface was based on stochastic classical trajectory calculations performed with a parametrized six-dim ...
DNA/RNA nucleotides and nucleosides: direct measurement of
DNA/RNA nucleotides and nucleosides: direct measurement of

Quantum Energy Regression using Scattering Transforms
Quantum Energy Regression using Scattering Transforms

< 1 ... 5 6 7 8 9 10 11 12 13 ... 53 >

Rotational spectroscopy



Rotational spectroscopy is concerned with the measurement of the energies of transitions between quantized rotational states of molecules in the gas phase. The spectra of polar molecules can be measured in absorption or emission by microwave spectroscopy or by far infrared spectroscopy. The rotational spectra of non-polar molecules cannot be observed by those methods, but can be observed and measured by Raman spectroscopy. Rotational spectroscopy is sometimes referred to as pure rotational spectroscopy to distinguish it from rotational-vibrational spectroscopy where changes in rotational energy occur together with changes in vibrational energy, and also from ro-vibronic spectroscopy (or just vibronic spectroscopy) where rotational, vibrational and electronic energy changes occur simultaneously.For rotational spectroscopy, molecules are classified according to symmetry into spherical top, linear and symmetric top; analytical expressions can be derived for the rotational energy terms of these molecules. Analytical expressions can be derived for the fourth category, asymmetric top, for rotational levels up to J=3, but higher energy levels need to be determined using numerical methods. The rotational energies are derived theoretically by considering the molecules to be rigid rotors and then applying extra terms to account for centrifugal distortion, fine structure, hyperfine structure and Coriolis coupling. Fitting the spectra to the theoretical expressions gives numerical values of the angular moments of inertia from which very precise values of molecular bond lengths and angles can be derived in favorable cases. In the presence of an electrostatic field there is Stark splitting which allows molecular electric dipole moments to be determined.An important application of rotational spectroscopy is in exploration of the chemical composition of the interstellar medium using radio telescopes.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report