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Spectroscopic properties of a two-level atom interacting with a
Spectroscopic properties of a two-level atom interacting with a

Ion mobility spectrometry-mass spectrometry (IMS
Ion mobility spectrometry-mass spectrometry (IMS

... large molecular weight biomolecules it enables analysis using smaller amount of material, allows analysis of structures >100 kDa that are difficult to analyse by NMR and is, arguably, as realistic an environment as x-ray structures due to lattice effects present. IMS-MS has, therefore, been utilised ...
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... dipole moment d of a fundamental particle has to be proportional to its spin, ...
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Scanning angle Raman spectroscopy: Investigation of
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... Raman spectroscopy measures the inelastic scattering of a photon from a molecule. From the quantum mechanical point of view, Raman scattering occurs when a monochromatic source with frequency v0 encounters a molecule and then the scattered photon is Raman shifted to a lower stokes shift (v0- vs) or ...
DISCOVERY OF THREE z > 6.5 QUASARS IN THE VISTA KILO
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Development and optimization of silicon based light

... Special thanks go to my partner in crime, Alfredo González. Frustration and failure divided by two results in only half the original frustration and failure, or so I like to believe. Furthermore, his usually-moreoptimist-than-mine views have often been a short (very short) morphine shot to my reali ...
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Manipulating Single Atoms with Optical Tweezers

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... (MOKE) are explored and used to investigate the remagnetization process of arrays of magnetic stripes or wires. First, the MOKE can easily be operated as a vector-magnetometer. In addition to the longitudinal MOKE geometry, also the perpendicular component of the magnetization of nanowires is measur ...
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... sequence stars of the same color1 . He suggested the name “subdwarfs” be used to represent this final, independent, class of stars. This name paralleled the use of the term “subgiants” to describe stars that fall below the giants on the HR diagram. The name also eliminated the confusion with white d ...
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... of the embedded, low-mass pre-main sequence star HL Tau, showing a ratio of column densities for C16 O and C18 O, N (C16 O)/N (C18 O), of 800 ± 200 (2σ ). Typical [16 O]/[18 O] in the local interstellar medium (ISM) is 557 ± 30, (Wilson 1999), similar to the solar system value of 499. The apparent o ...
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... degree of reduction. The results were explained in terms of variations of the local surface potential induced by local charge transfer mechanisms, where evidence of both increasing and decreasing surface charge was observed depending on the incident photon energy. It has been determined that oxygen ...
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Ultrafast Control of the Dynamics of Diatomic Molecules
Ultrafast Control of the Dynamics of Diatomic Molecules

... Samples of gaseous diatomic molecules are excited into rotational wavepackets by ultrashort laser pulses, and the resultant dynamics are probed in the time-domain. The preparation of non-isotropic rotational distributions of molecules in field-free conditions enables a number of strong-field physics ...
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Circular dichroism



Circular dichroism (CD) is dichroism involving circularly polarized light, i.e., the differential absorption of left- and right-handed light. Left-hand circular (LHC) and right-hand circular (RHC) polarized light represent two possible spin angular momentum states for a photon, and so circular dichroism is also referred to as dichroism for spin angular momentum. This phenomenon was discovered by Jean-Baptiste Biot, Augustin Fresnel, and Aimé Cotton in the first half of the 19th century. It is exhibited in the absorption bands of optically active chiral molecules. CD spectroscopy has a wide range of applications in many different fields. Most notably, UV CD is used to investigate the secondary structure of proteins. UV/Vis CD is used to investigate charge-transfer transitions. Near-infrared CD is used to investigate geometric and electronic structure by probing metal d→d transitions. Vibrational circular dichroism, which uses light from the infrared energy region, is used for structural studies of small organic molecules, and most recently proteins and DNA.
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