title: Note: A novel design of a microwave feed for a microwave frequency standard with a linear ion trap.
abstract: Linear ion traps are important tools in many applications, particularly in mass spectrum analyzers and frequency standards. Here a novel design of a microwave feed integrated into one electrode of a linear quadrupole ion trap is demonstrated for the application of a microwave frequency standard based on cadmium ions. The mechanical structure of the microwave feed is compact and easy to build. The ion trap integrated with this microwave feed is successfully applied to measure the hyperfine splitting of the ground state of (113)Cd(+), thus demonstrating the practicality and reliability of the microwave feed.
authors.affiliation: NIM-THU Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: J W
authors.initials: JW
authors.lastname: Zhang
authors.affiliation: NIM-THU Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: K
authors.initials: K
authors.lastname: Miao
authors.affiliation: NIM-THU Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: S G
authors.initials: SG
authors.lastname: Wang
authors.affiliation: NIM-THU Joint Institute for Measurement Science (JMI), Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Z B
authors.initials: ZB
authors.lastname: Wang