This paper presents The investigation of laser resonance ionization mass spectroscopy of lutetium with our laser ionization mass spectrometry system manufactured by our own. The optimum radius of laser focal spot over...This paper presents The investigation of laser resonance ionization mass spectroscopy of lutetium with our laser ionization mass spectrometry system manufactured by our own. The optimum radius of laser focal spot overlapped with atomic beam is calculated theoretical.Lutetium ionic signal at The rate of 1.8 ×105 s- 1is detected The Sample she of 1 μg lutetium.. With laser resonance ionization and The of atomizer,it is possible that The detection ho reaches 106 atoms. The effect of laser-induce isotopic discrimination on The measurement of isotope ratio is discussed. It is proposed that laser bandwidth and wavelength tuning effects are The main factors of deviation of lutetium isotopic ratios with this broad bandwidth laser.展开更多
The new ternary complex of [Lu(POA)3phen]n (POA is phenoxy acetic acid, phen is 1,10 phenanthroine) was synthesized and crystal structure was determined by X ray diffraction.The crystal structure belongs to monoclinic...The new ternary complex of [Lu(POA)3phen]n (POA is phenoxy acetic acid, phen is 1,10 phenanthroine) was synthesized and crystal structure was determined by X ray diffraction.The crystal structure belongs to monoclinic system with space group P21/n.a=20.394(3)? ,b=8.513(1)? , c=20.708(3)? ,β =107.70(1)° ,V=3425.1(8)? 3,Z=4,Dc=1.568Mg· m－ 3,μ (MoKα )=2.939mm－ 1. Each Lu3＋ ion is nine coodinated. Coordination polyhedron is a distorted trigonal prism. The carboxylate groups in the complex are bonded to the lutetium ion in the bridged bidentate and the bridged tridentate. Lutetium ions were linked by the bridged carboxylate groups, resulting in an infinite chain.展开更多
The lutetium dihydride LuH2is stable at ambient conditions.Here we show that its color undergoes sequential changes from dark blue at ambient pressure to pink at ~2.2 GPa and then to bright red at ~4 GPa upon compress...The lutetium dihydride LuH2is stable at ambient conditions.Here we show that its color undergoes sequential changes from dark blue at ambient pressure to pink at ~2.2 GPa and then to bright red at ~4 GPa upon compression in a diamond anvil cell.Such a pressure-induced color change in LuH2is reversible and it is very similar to that recently reported in the N-doped lutetium hydride [Nature 615,244(2023)].However,our preliminary resistance measurements on LuH2under pressures up to ~7 GPa evidenced no superconductivity down to 1.5 K.展开更多
文摘This paper presents The investigation of laser resonance ionization mass spectroscopy of lutetium with our laser ionization mass spectrometry system manufactured by our own. The optimum radius of laser focal spot overlapped with atomic beam is calculated theoretical.Lutetium ionic signal at The rate of 1.8 ×105 s- 1is detected The Sample she of 1 μg lutetium.. With laser resonance ionization and The of atomizer,it is possible that The detection ho reaches 106 atoms. The effect of laser-induce isotopic discrimination on The measurement of isotope ratio is discussed. It is proposed that laser bandwidth and wavelength tuning effects are The main factors of deviation of lutetium isotopic ratios with this broad bandwidth laser.
文摘The new ternary complex of [Lu(POA)3phen]n (POA is phenoxy acetic acid, phen is 1,10 phenanthroine) was synthesized and crystal structure was determined by X ray diffraction.The crystal structure belongs to monoclinic system with space group P21/n.a=20.394(3)? ,b=8.513(1)? , c=20.708(3)? ,β =107.70(1)° ,V=3425.1(8)? 3,Z=4,Dc=1.568Mg· m－ 3,μ (MoKα )=2.939mm－ 1. Each Lu3＋ ion is nine coodinated. Coordination polyhedron is a distorted trigonal prism. The carboxylate groups in the complex are bonded to the lutetium ion in the bridged bidentate and the bridged tridentate. Lutetium ions were linked by the bridged carboxylate groups, resulting in an infinite chain.
基金supported by the National Natural Science Foundation of China (Grant Nos.12025408,11921004,11888101,and 11974029)the Beijing Natural Science Foundation (Grant No.Z190008)+2 种基金the National Key R&D Program of China (Grant Nos.2018YFA0305700 and 2021YFA1400200)the Strategic Priority Research Program of CAS (Grant No.XDB33000000)the CAS Interdisciplinary Innovation Team (Grant No.JCTD-2019-01)。
文摘The lutetium dihydride LuH2is stable at ambient conditions.Here we show that its color undergoes sequential changes from dark blue at ambient pressure to pink at ~2.2 GPa and then to bright red at ~4 GPa upon compression in a diamond anvil cell.Such a pressure-induced color change in LuH2is reversible and it is very similar to that recently reported in the N-doped lutetium hydride [Nature 615,244(2023)].However,our preliminary resistance measurements on LuH2under pressures up to ~7 GPa evidenced no superconductivity down to 1.5 K.
基金supported by the National Natural Science Foundation of China(51262018)the Fundamental Research Funds for Universities of Gansu Province(056003)the Hongliu Outstanding Talents Foundation of Lanzhou University of Technology(J201205)~~
