J dependences of the isotope shift and hyperfine structure in Gd I 4f75d6s2 9D, 4f75d6s6p 9D, and 9F terms.
J dependences of the isotope shift and hyperfine structure in Gd I 4f75d6s2 9D, 4f75d6s6p 9D, and 9F terms.
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Gd I 4f75d6s2 9D、4f75d6s6p 9D 和 9F 项中同位素位移和超精细结构的 J 依赖性。
DOI：
10.1103/physreva.42.1416
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Yoshizawa
中科院分区：
文献类型：
--
作者：
Jin;Sakata;Wakasugi;Horiguchi;Yoshizawa
对于具有 {ital 的稳定同位素，Gd I 的 4{ital f}{sup 7}5{ital d}6{ital s}{sup 2}({sup 9}{ital D})-4{ital f}{sup 7}5{ital d}6{ital s}6{ital p}({sup 9}{ital D},{sup 9}{ital F}) 中 16 个跃迁的同位素位移A}=152--160通过原子束激光光谱法测量。确定了两项{sup 9}{ital D}项和{sup 9}{ital F}项中{sup 155}Gd和{sup 157}Gd的超精细常数{ital A}和{ital B}。推导了4{ital f}电子的单电子超精细参数{ital a}{sub 4{ital f}}{sup 10}和5{ital d}电子的单电子超精细参数{ital a}{sub 5{ital d}}{sup {ital k}}{sub {ital s}k{ital l}}、{ital b}{sub 5{ital d}}{sup {ital k}}{sub {ital s}k{ital l}}。得到{sup 155}Gd和{sup 157}Gd的电四极矩{ital Q}分别为1.27(5){ital b}和1.36(6){ital b}。观察了两个{sup 9}{ital D}项和{sup 9}{ital F}项中同位素位移的{ital J}依赖性。推导了4{ital f}{sup 7}5{ital d}6{ital s}{sup 2}的{sup 9}{ital D}项的交叉二阶效应参数{ital z}{sub 5{ital d}}，得到{ital z}{sub 5{ital d}}/{lambda}值为134(4) MHz/fm{sup 2}。我们证实，场位移在交叉二阶效应中占主导地位，而特定质量位移可以忽略不计。« less
Isotope shifts of 16 transitions in 4{ital f}{sup 7}5{ital d}6{ital s}{sup 2}({sup 9}{ital D})-4{ital f}{sup 7}5{ital d}6{ital s}6{ital p}({sup 9}{ital D},{sup 9}{ital F}) of Gd I for the stable isotopes with {ital A}=152--160 were measured by atomic-beam laser spectroscopy. The hyperfine constants {ital A} and {ital B} of {sup 155}Gd and {sup 157}Gd in two {sup 9}{ital D} terms and the {sup 9}{ital F} term were determined. The single-electron hyperfine parameters {ital a}{sub 4{ital f}}{sup 10} for the 4{ital f} electron and {ital a}{sub 5{ital d}}{sup {ital k}}{sub {ital s}k{ital l}},{ital b}{sub 5{ital d}}{sup {ital k}}{sub {ital s}k{ital l}} for the 5{ital d} electron were deduced. The electric quadrupole moments {ital Q} of {sup 155}Gd and {sup 157}Gd were obtained to be 1.27(5){ital b} and 1.36(6){ital b}, respectively. The {ital J} dependences of the isotope shifts in two {sup 9}{ital D} terms and the {sup 9}{ital F} term were observed. The parameter {ital z}{sub 5{ital d}} of the crossed-second-order effect for the {sup 9}{ital D} term of 4{ital f}{sup 7}5{ital d}6{ital s}{sup 2} was derived, and the value of {ital z}{sub 5{ital d}}/{lambda} was obtained to be 134(4) MHz/fm{sup 2}. We confirmed that the field shift is dominant in themore » crossed-second-order effect and the specific mass shift is negligible.« less