Ti X-Ray Laser Shadowgraphy Experiment

Abstract

An x-ray lFer shadowgraphy experiment was conducted on Xingguang-ll laser facility in 1996.A multi-layer spherical mirror was used as an imaging element and a high sensitivity CCD camera as a detector. W e measured the near-field image of the T i x-ray laser beam. With a T i x-ray laser beam as a backlight source, we obtained a clear Cu mesh image, demonstrating the potential as advanced diagnostic measurements to study high density plasmas in inertial confinement fusion research.

Experimental and DFT studies on the antioxidant activity of a C-glycoside from Rhynchosia capitata

“…This shows that the abstraction of H-atom from 4 0 -OH site (B-ring) is easier than 7-OH (A-ring) and 5-OH (A-ring) sites. The higher BDE of 5-OH and 7-OH radical species are due to the presence of 2,3-double bond with 4-oxo function(1,4-pyrone moiety) which is a strong electron-withdrawing group in C and it suppresses the radical-scavenging activity of A-ring in general [49]. An intramolecular hydrogen bond is found between 4-oxo group and 5 hydroxyl groups which is responsible for higher BDE value of 5-OH compared to 7-OH radical.…”

Chiral Symmetry Restoration and Dileptons in Relativistic Heavy-Ion Collisions

“…Since the pion condensates inherent in the DCC constitute an enhanced source of predominantly soft pions, it has soon been realized that within this coherent state a copious annihilation into soft dilepton pairs might occur, similar to the standard ππ annihilation, only at much lower invariant masses. In fact, the dominant yield from such coherent radiation will be concentrated well below the two-pion threshold [192]. Therefore, such a signal will be very difficult to discriminate in a heavy-ion collision due to the notoriously large background from π 0 → γe + e − Dalitz decays after freezeout.…”

Dileptons from disoriented chiral condensates

“…In addition to the hadronic signals, the electro-magnetic DCC signatures have also been also addressed [17,18]. Since the electro-magnetic current is given by the third component of the isovector current, the isospin oscillation of a coherent pion field may produce photons and dileptons which could provide information on the early dynamical evolution of the DCC.…”