A multi-anode transverse-field gas ionization chamber (MAIC) for heavy-ion identification at the Radioactive Ion Beam Line in Lanzhou (RIBLL)[1] was developed (as shown in Fig.l). It consists of cathode plate, Frisch ...A multi-anode transverse-field gas ionization chamber (MAIC) for heavy-ion identification at the Radioactive Ion Beam Line in Lanzhou (RIBLL)[1] was developed (as shown in Fig.l). It consists of cathode plate, Frisch grid and four anode plates (20, 40, 80, and 136 mm wide respectively). The MAIC works at 104 Pa of flowing gas P10 (10% CH4+90% Ar). A three-component a-source was used for determining the energy展开更多
High quality YBa2Cu3O6+x (YBCO) superconductive thin films have been fabricated on the SrTiO3(100) substrate using laser molecular beam epitaxy (laser-MBE).The active oxygen source was used,which made the necessary am...High quality YBa2Cu3O6+x (YBCO) superconductive thin films have been fabricated on the SrTiO3(100) substrate using laser molecular beam epitaxy (laser-MBE).The active oxygen source was used,which made the necessary ambient oxygen pressure be 2-3 orders lower than that in pulsed laser deposition (PLD).Tc0 is 85-87 K,and Jc～1.0×106 A/cm2.Atomic force microscopy (AFM) measurements show that no obvious particulates can be observed and the root mean square roughness is 7.8 nm.High stability DC superconducting quantum interference devices (DC-SQUID) was fabricated using this YBCO thin film.展开更多
文摘A multi-anode transverse-field gas ionization chamber (MAIC) for heavy-ion identification at the Radioactive Ion Beam Line in Lanzhou (RIBLL)[1] was developed (as shown in Fig.l). It consists of cathode plate, Frisch grid and four anode plates (20, 40, 80, and 136 mm wide respectively). The MAIC works at 104 Pa of flowing gas P10 (10% CH4+90% Ar). A three-component a-source was used for determining the energy
基金This work was supported by the State Key Program of China (Grant No. G1998061412) the National 863 Project (Grant No. 863-CD070103) .
文摘High quality YBa2Cu3O6+x (YBCO) superconductive thin films have been fabricated on the SrTiO3(100) substrate using laser molecular beam epitaxy (laser-MBE).The active oxygen source was used,which made the necessary ambient oxygen pressure be 2-3 orders lower than that in pulsed laser deposition (PLD).Tc0 is 85-87 K,and Jc～1.0×106 A/cm2.Atomic force microscopy (AFM) measurements show that no obvious particulates can be observed and the root mean square roughness is 7.8 nm.High stability DC superconducting quantum interference devices (DC-SQUID) was fabricated using this YBCO thin film.
