In this paper,we report a newly developed Knudsen Cell injection system for SH-PermEBIT.This technique can overcome disadvantages of introducing organometallic gases and wired probes into EBIT and provide steady conti...In this paper,we report a newly developed Knudsen Cell injection system for SH-PermEBIT.This technique can overcome disadvantages of introducing organometallic gases and wired probes into EBIT and provide steady continuous injection.A specially designed vacuum line is used to ensure that the Knudsen Cell satisfies the vacuum level of SH-permEBIT.Using this system we successfully injected ytterbium into the SH-permEBIT and recorded a spectrum in the visible wavelength region.展开更多
In this work we describe a multi-parameter data acquisition system(DAQ)which has been developed for the Shanghai EBIT.This system is operated at the collision research platform which includes a recoil-ion momentum spe...In this work we describe a multi-parameter data acquisition system(DAQ)which has been developed for the Shanghai EBIT.This system is operated at the collision research platform which includes a recoil-ion momentum spectrometer(RIMS).We have employed DAQ based on the VME system,which is a very fast developing system within the RIMS community,and with which we can reach data transfer rates of up to 160 Mb·s- 1.The software developed for DAQ based on UnisDX-XP is also described.展开更多
An experimental measurement of the lifetime of 3d^(9) ^(2)D_(3/2) metastable level in Mo^(15+)is reported in this work.The Mo^(15+)ions are produced and trapped in an electron beam ion trap with a magnetic field of 0....An experimental measurement of the lifetime of 3d^(9) ^(2)D_(3/2) metastable level in Mo^(15+)is reported in this work.The Mo^(15+)ions are produced and trapped in an electron beam ion trap with a magnetic field of 0.65 T.The decay photons emitted from 3d^(9) ^(2)D_(3/2) level are subsequently recorded via a cooled photomultiplier tube.Through meticulous scrutiny of potential systematic uncertainties affecting the measurement outcomes,we have determined the lifetime of Mo^(15+)3d^(9)2D_(3/2)metastable level to be 2.83(22)ms.The experimental result provides a clear distinguishment from existing calculations based on various theoretical approaches.展开更多
基金Supported by the National Natural Science Foundation of China(No.11374061)
文摘In this paper,we report a newly developed Knudsen Cell injection system for SH-PermEBIT.This technique can overcome disadvantages of introducing organometallic gases and wired probes into EBIT and provide steady continuous injection.A specially designed vacuum line is used to ensure that the Knudsen Cell satisfies the vacuum level of SH-permEBIT.Using this system we successfully injected ytterbium into the SH-permEBIT and recorded a spectrum in the visible wavelength region.
基金Supported by Shanghai Leading Academic Discipline Project(Project Number:B107)the Project-sponsored by SRF for ROCS,SEM
文摘In this work we describe a multi-parameter data acquisition system(DAQ)which has been developed for the Shanghai EBIT.This system is operated at the collision research platform which includes a recoil-ion momentum spectrometer(RIMS).We have employed DAQ based on the VME system,which is a very fast developing system within the RIMS community,and with which we can reach data transfer rates of up to 160 Mb·s- 1.The software developed for DAQ based on UnisDX-XP is also described.
基金Project supported by the National Key R&D Program of China(Grant No.2022YFA1602500)the National Natural Science Foundation of China(Grant No.12274352)。
文摘An experimental measurement of the lifetime of 3d^(9) ^(2)D_(3/2) metastable level in Mo^(15+)is reported in this work.The Mo^(15+)ions are produced and trapped in an electron beam ion trap with a magnetic field of 0.65 T.The decay photons emitted from 3d^(9) ^(2)D_(3/2) level are subsequently recorded via a cooled photomultiplier tube.Through meticulous scrutiny of potential systematic uncertainties affecting the measurement outcomes,we have determined the lifetime of Mo^(15+)3d^(9)2D_(3/2)metastable level to be 2.83(22)ms.The experimental result provides a clear distinguishment from existing calculations based on various theoretical approaches.
