In this paper, we discuss two-atom and three-atom micromaser with Dicke superradiance states, In comparing the average photon numbers and variations obtained in this paper with those generated by atomic jumping states in the previous paper, we find out both of them are superior to the single-atom micromaser in the aspect of stability.

The radiation temperatures of various objects with different skin temperatures are measured by 3 mm DC Dicke radiometer.

Soup-free emulsion polymerization of n-butyl acrylate by ultrasonic irradiation;

The core-shell Ag-Ga/polymethyl methacrylate nanoparticles were prepared by the emulsion polymerization method under ultrasonic irradiation in-situ without any initiators or metal reducer.

The use of ultrasonic irradiation in the presence of PTC for organic synthesis is well documented.

Synthesis of aromatic aldehyde and ketone thiosemicarbazones in aqueous solution under ultrasound irradiation;

Solvent-free Knoevenagel condensation reaction under ultrasound irradiation,noncatalyst;

Changes of bFGF protein and mRNA in vulva skin of rabbit after ultrasound irradiation;

Ultrasonic radiation precipitation preparation and luminescence characterization of nanometer Y_2O_3∶Eu~(3+);

Effect of ultrasonic radiation on unsaturation degree of fatty acids of Platymonas subcordiformis;

Synthesis of novel diphenylacetyl-aroylthioureas under ultrasonic radiation

The reaction of oximes with benzyl bromide catalyzed by benzyldimethyltetradecylammonium chloride was carried out at room temperature for 30～60 min in aqueous sodium hydroxide solution under ultrasound irradiation to give O-benzyloxime derivatives in 60%～96% yields.