Pulse stimulation in cadmium- and mercury-vapor discharges

Zhukov, V. V.; Иванов, И. Г.; Sém, M. F.

doi:10.1007/bf00617454

Cited by 2 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This means that not only metastable states but also other excited states of helium atoms take part in the Penning process. On the other hand, the ability to pump this laser transition in a discharge without helium, which has been achieved in a Ne-Cd mixture (Csillag et al 1971) and in a 'pure' cadmium vapour discharge (Zhukov et al 1977), demonstrates the possibility of pumping by electron impact in particular.…”

Section: Introductionmentioning

confidence: 99%

The dominant pumping mechanism of the 441.6 nm Cd II line in a three-colour hollow-cathode discharge laser

Kalinchenko

Иванов

Sém

et al. 1998

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

The three most probable processes for pumping of the upper lasing level of the 441.6 nm Cd II line under hollow-cathode discharge conditions, namely Penning ionization, 'direct' and 'stepwise' electron excitation, have been analysed. Atomic ionization and excitation cross sections and the electron distribution function in the energy interval up to 300 eV have been calculated. Radial dependencies of pumping rates of laser transition for a cylindrical cathode cavity and an integral pumping rate have been determined versus the cadmium vapour and helium pressures. It has been shown that the contributions of Penning ionization and direct and stepwise excitations to the pumping rate are strongly dependent on the pressures of discharge components. Contributions of these processes are found to reach up to about 70, 30 and less than 1%, respectively, under optimal conditions for the laser discharge. The comparison of calculated radial pumping rate distributions with experimental data confirmed that the Penning ionization plays the dominant role.

show abstract

Section: Introductionmentioning

confidence: 99%

The dominant pumping mechanism of the 441.6 nm Cd II line in a three-colour hollow-cathode discharge laser

Kalinchenko

Иванов

Sém

et al. 1998

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…[ 1,2 ] Chiral biomolecules with a size smaller than the light wavelength generally showed weak chiral signal, while artificial chiral nanomaterials concentrated the light within a particular area could strengthen light‐matter interaction and display enhanced chiral responses. [ 3,4 ] Chiral nanomaterials were expanded from single chiral NPs to artificial chiral assembled superstructures [ 5 ] with chirality evolution from the chirality transfer from chiral molecules modified on NPs to the chiral geometry of nanomaterials. [ 6–9 ] In particular, metal nanoparticles (NPs), metal oxide NPs, semiconductors, and other chiral nanomaterials constituted the majority of chiral nanomaterials and demonstrated high catalysis activity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Chiral Nanomaterials with Selective Catalysis Activity

Cao,

Yang,

Kim

et al. 2024

Advanced Science

View full text Add to dashboard Cite

Chiral nanomaterials with unique chiral configurations and biocompatible ligands have been booming over the past decade for their interesting chiroptical effect, unique catalytical activity, and related bioapplications. The catalytic activity and selectivity of chiral nanomaterials have emerged as important topics, that can be potentially controlled and optimized by the rational biochemical design of nanomaterials. In this review, chiral nanomaterials synthesis, composition, and catalytic performances of different biohybrid chiral nanomaterials are discussed. The construction of chiral nanomaterials with multiscale chiral geometries along with the underlying principles for enhancing chiroptical responses are highlighted. Various biochemical approaches to regulate the selectivity and catalytic activity of chiral nanomaterials for biocatalysis are also summarized. Furthermore, attention is paid to specific chiral ligands, materials compositions, structure characteristics, and so on for introducing selective catalytic activities of representative chiral nanomaterials, with emphasis on substrates including small molecules, biological macromolecule, and in‐site catalysis in living systems. Promising progress has also been emphasized in chiral nanomaterials featuring structural versatility and improved chiral responses that gave rise to unprecedented chances to utilize light for biocatalytic applications. In summary, the challenges, future trends, and prospects associated with chiral nanomaterials for catalysis are comprehensively proposed.

show abstract

Pulse stimulation in cadmium- and mercury-vapor discharges

Cited by 2 publications

References 2 publications

The dominant pumping mechanism of the 441.6 nm Cd II line in a three-colour hollow-cathode discharge laser

The dominant pumping mechanism of the 441.6 nm Cd II line in a three-colour hollow-cathode discharge laser

Biomimetic Chiral Nanomaterials with Selective Catalysis Activity

Contact Info

Product

Resources

About