High energy Rydberg and ion-pair states, state mixing and excitation dynamics of HI

2019 ◽  
Vol 21 (41) ◽  
pp. 23154-23161 ◽  
Author(s):  
Arnar Hafliðason ◽  
Meng-Xu Jiang ◽  
Ágúst Kvaran
Keyword(s):  
Multiphoton Ionization ◽  
High Energy ◽  
Ion Pair ◽  
State Mixing ◽  
Fragmentation Processes ◽  
Excitation Dynamics

High energy Rydberg and ion-pair states, state interactions, mixing and effects on multiphoton-fragmentation processes determined from mass-resolved-multiphoton-ionization (MR-MPI) studies of HI.

Two-color studies of CH3Br excitation dynamics with MPI and slice imaging

2019 ◽  
Vol 21 (20) ◽  
pp. 10391-10401 ◽  
Author(s):  
Arnar Hafliðason ◽  
Pavle Glodic ◽  
Greta Koumarianou ◽  
Peter C. Samartzis ◽  
Ágúst Kvaran
Keyword(s):  
Multiphoton Ionization ◽  
Pump And Probe ◽  
Slice Imaging ◽  
Fragmentation Processes ◽  
Excitation Dynamics

Multiphoton-fragmentation processes for CH3Br determined by two-color, pump and probe experiments with mass-resolved-multiphoton-ionization (MR-MPI) and slice imaging.

scholarly journals IMPROVED CIPROFLOXACIN PENETRATION IN GOAT EYES USING COMPLEXATION TECHNIQUE

2019 ◽  
pp. 168-171
Author(s):  
DURGA PANDEY ◽  
DEEPTI JAIN
Keyword(s):  
Drug Release ◽  
In Vitro Release ◽  
Penetrating Trauma ◽  
Spherical Shape ◽  
High Energy ◽  
Ion Pair ◽  
Precipitation Method ◽  
Globule Size ◽  
Sustain Release

Objective: The objective of the present work was to improve the retention and penetration of ciprofloxacin (CF) ion pair entrapped within submicron emulsion (SE) in goat eyes and characterize the SE for improvement of ocular activity. The developed delivery system resulted with prolonged drug release as compared to the conventional dosage form. Methods: SE prepared by high-energy emulsification and sonication to obtain uniform globule size. Ion-pair complex is prepared by precipitation method. Results: Average internal droplets size of the optimized formulation was 0.300 μm, pH of the optimized formulation was 6.4±0.7 (average of three determinations) and viscosity 3.2±0.3 cP suitable for ocular use. Entrapment was 92.12%. In vitro drug release pattern in dialysis membrane showed sustain release of CF, a cumulative percent release of CF was found 77% in 10 h. Scanning electron microscopy showed spherical shape and size within 1 μm. In vitro release in goat eyes was found 35.86 % for optimized formulation compared to market, 26.83% in 60 min. Conclusion: Developed optimized formulation can be a good candidate for ocular drug delivery in severe ocular infections where frequent dosing required such as endophthalmitis, corneal ulcer, and penetrating trauma.

SPIN TRANSFER IN FRAGMENTATION PROCESSES AND HYPERON POLARIZATION IN DEEP-INELASTIC SCATTERING

2003 ◽  
Vol 18 (08) ◽  
pp. 1485-1489 ◽  
Author(s):  
CHUN-XIU LIU ◽  
QING-HUA XU ◽  
ZUO-TANG LIANG
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
High Energy ◽  
Polarization Transfer ◽  
Spin Transfer ◽  
Fragmentation Process ◽  
Good Test ◽  
Fragmentation Processes ◽  
Transfer Mechanisms ◽  
Existing Data

We present the results for the polarizations of different octet hyperons produced in the current fragmentation regions of μ- N or νμ N deep-inelastic scatterings using different models for spin transfer in fragmentation processes. We found that measuring the polarization of Σ+ produced in these processes can give a good test to the validity of the different spin transfer models. Measuring PΣ+(T) in transversely polarized case should be able to give an useful check whether in high-energy fragmentation process the polarization transfer mechanisms are the same for both the longitudinally polarized and transversely polarized cases. A comparison with the existing data is made.

Experimental evidence for Rydberg and ion-pair state mixing of Cl2 in the 1 1Σu+ state

1989 ◽  
Vol 156 (4) ◽  
pp. 301-304 ◽  
Author(s):  
Kaoru Yamanouchi ◽  
Tai Tsuchizawa ◽  
Jun Miyawaki ◽  
Soji Tsuchiya
Keyword(s):  
Experimental Evidence ◽  
Ion Pair ◽  
State Mixing ◽  
Pair State

scholarly journals Multiphoton Ionization and Fragmentation of Hydrogen Chloride: A Diatomic Still Good for a Surprise

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Christof Maul ◽  
Alexey I. Chichinin ◽  
Karl-Heinz Gericke
Keyword(s):  
Hydrogen Chloride ◽  
Multiphoton Ionization ◽  
Chemical Imaging ◽  
Angular Distributions ◽  
Ultraviolet Wavelength ◽  
Production Of Hydrogen ◽  
Minimum Potential ◽  
Fragmentation Processes ◽  
Competing Pathways

The competition between multiphoton ionization and fragmentation in the diatomic molecule hydrogen chloride is reviewed. Emphasis is laid on recent experimental results employing chemical imaging methods in order to obtain kinetic energy distributions and angular distributions of photoproducts. The energy range considered is 15 to 20 eV, equivalent to the absorption of three or four photons in the ultraviolet wavelength range. The role of Rydberg states as resonantly excited intermediate states in the ionization/fragmentation processes is assessed. Mixing among Σ1+ states gives rise to peculiarly shaped double minimum potential energy curves which allow for the production of hydrogen and chlorine atomic and ionic fragments via several competing pathways, in addition to the production of molecular HCl+ ions. States with different electronic properties show a qualitatively different behaviour from Σ+ states. Accidental resonances between states of differing orbital angular momentum or multiplicity serve to override these differences and cause subtle as well as significant deviations from the unperturbed behaviour.

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