scholarly journals Polarized triplet production by circularly polarized photons

JETP Letters ◽  
2002 ◽  
Vol 75 (9) ◽  
pp. 452-456 ◽  
Author(s):  
V. V. Bytev ◽  
E. A. Kuraev ◽  
M. V. Galynskii ◽  
A. P. Potylitsyn
Keyword(s):  
Circularly Polarized ◽  
Polarized Photons

scholarly journals Facilities for the Performance of Fano Effect Measurements as a Probe of Electron Correlation

2006 ◽  
Vol 986 ◽  
Author(s):  
J. G. Tobin ◽  
S. W. Tobin ◽  
T Komesu ◽  
B W Chung ◽  
S. A. Morton ◽  
...  
Keyword(s):  
Direct Observation ◽  
Electron Correlation ◽  
Selective Excitation ◽  
Photoelectron Emission ◽  
Circularly Polarized ◽  
Fano Effect ◽  
Spin Polarized ◽  
Fano Effects ◽  
Polarized Photons

AbstractFano Effect measurements are the key to direct observation of the Kondo or spin shielding intrinsic to models of electron correlation. The Fano Effect is the observation of spin polarized photoelectron emission from NONMAGNETIC materials, under chirally selective excitation, such as circularly polarized photons. Below are described three spectrometers, with which Fano Effects measurements have been made.

scholarly journals Origin of Terrestrial Bioorganic Homochirality and Symmetry Breaking in the Universe

Symmetry ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 919 ◽  
Author(s):  
Jun-ichi Takahashi ◽  
Kensei Kobayashi
Keyword(s):  
Symmetry Breaking ◽  
Parity Violation ◽  
Circularly Polarized ◽  
Physical Conditions ◽  
Quantum Radiation ◽  
Interstellar Media ◽  
Spin Polarized ◽  
Terrestrial Life ◽  
Polarized Photons ◽  
The Universe

The origin of terrestrial bioorganic homochirality is one of the most important and unresolved problems in the study of chemical evolution prior to the origin of terrestrial life. One hypothesis advocated in the context of astrobiology is that polarized quantum radiation in space, such as circularly polarized photons or spin-polarized leptons, induced asymmetric chemical and physical conditions in the primitive interstellar media (the cosmic scenario). Another advocated hypothesis in the context of symmetry breaking in the universe is that the bioorganic asymmetry is intrinsically derived from the chiral asymmetric properties of elementary particles, that is, parity violation in the weak interaction (the intrinsic scenario). In this paper, the features of these two scenarios are discussed and approaches to validate them are reviewed.

scholarly journals Measurement of the helicity asymmetry E for the reaction $$ \gamma p\rightarrow \pi ^0 p$$

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
M. Gottschall ◽  
F. Afzal ◽  
A. V. Anisovich ◽  
D. Bayadilov ◽  
R. Beck ◽  
...  
Keyword(s):  
Energy Range ◽  
Partial Wave ◽  
Photon Energy ◽  
Photon Energy Range ◽  
Angular Range ◽  
Polarized Electrons ◽  
Circularly Polarized ◽  
Polarized Protons ◽  
Double Polarization ◽  
Polarized Photons

AbstractA measurement of the double-polarization observable E for the reaction $$\gamma p\rightarrow \pi ^0 p$$ γ p → π 0 p is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn using the Bonn frozen-spin butanol (C$$_4$$ 4 H$$_9$$ 9 OH) target, which provided longitudinally-polarized protons. Circularly-polarized photons were produced via bremsstrahlung of longitudinally-polarized electrons. The data cover the photon energy range from $$E_\gamma =600$$ E γ = 600 to 2310 MeV and nearly the complete angular range. The results are compared to and have been included in recent partial wave analyses.

The Scattering of 0.5-Mev Circularly Polarized Photons in Magnetized Iron

1952 ◽  
Vol 85 (4) ◽  
pp. 675-676 ◽  
Author(s):  
Forrest P. Clay ◽  
Frank L. Hereford
Keyword(s):  
Circularly Polarized ◽  
Polarized Photons

A theory of circular dichroism

1969 ◽  
Vol 47 (4) ◽  
pp. 577-579 ◽  
Author(s):  
V. Lawetz ◽  
D. A. Hutchinson
Keyword(s):  
Circular Dichroism ◽  
Radiation Field ◽  
Cross Sections ◽  
Classical Result ◽  
Absorption Coefficients ◽  
Circularly Polarized ◽  
The Difference ◽  
Scattering Cross Sections ◽  
Polarized Photons ◽  
Circular Dichroïsm

An expression for circular dichroism is derived by a method in which the radiation field, in addition to the molecules, is quantized. From the total scattering cross sections for right and for left circularly polarized photons, the respective absorption coefficients are determined. A formula for the circular dichroism is obtained from the difference between the absorption coefficients. The present result is in agreement with the semi-classical result of Condon, Altar, and Eyring.

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