Level structure of 103Ru studied by the 100Mo(α, n)103Ru reaction

doi:10.1016/0375-9474(75)90286-9

Nuclear Physics A

Volume 243, Issue 3, 26 May 1975, Pages 395-412

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Abstract

The energy level structure of ¹⁰³Ru was studied by means of the ¹⁰⁰Mo(α, n)¹⁰³Ru reaction. The experiments included measurements of the γ-ray yield as a function of projectile energy, γ-γ coincidence measurements, γ-ray angular distributions and lifetime measurements. Two ΔI = 2 cascades proceeding to the $72$ ⁺ and $112$ ⁻ states were observed. The half-life of the $112$ ⁻ state was determined as $T_{12} = 1.67±0.10 ms$ , and that of the $72$ ⁺ state as $T_{12} < 15 ns$ . It is concluded that the nucleus has a prolate shape in the $112$ ⁻ state.

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Nuclear Data Sheets for A = 103
2009, Nuclear Data Sheets
The 2001 evaluation on mass A = 103 (2001De37) has been revised, taking into account all data available before March 2009. Experimental information is presented from the neutron rich nucleus ¹⁰³Sr to the neutron deficient ¹⁰³Sn nucleus. The experimental information on excited states for ¹⁰³Sr and ¹⁰³y is very scarce New (HI, xnγ) data sets for several nuclides have been evaluated and new and more accurate data for γ intensities and multipolarities obtained. The BRICC code has been used for the calculation of conversion coefficients.
Nuclear data sheets update for A = 103
1993, Nuclear Data Sheets
Nuclear magnetic resonance on oriented 103Ru in Fe
1990, Nuclear Physics, Section A
The technique of nuclear magnetic resonance on oriented nuclei was applied to 39 d ¹⁰³Ru in Fe. The zero-field hyperfine splitting of ¹⁰³Ru $Fe$ was determined to be 51.32 (5) MHz. In combination with previous nuclear orientation experiments the ground-state spin of ¹⁰³Ru is determined uniquely to be $32$ With the hyperfine field of −489.6 (4.0) kG, and taking into account the uncertainty due to a hyperfine anomaly, the g-factor and magnetic moment of ¹⁰³Ru are deduced to be 0.1375 (21) and 0.2063 (31)μ_N, respectively. The magnetic moments of the low-lying collective $32^{+}$ states in the mass region A ∼ 100 are discussed.
Nuclear data sheets for A = 103
1985, Nuclear Data Sheets
Experimental information is presented from the neutron rich ¹⁰³Zr to the neutron deficient ¹⁰³Sn. At the neutron rich side, new information on the β⁻ decay of ¹⁰³Zr (1.3 s), ¹⁰³Nb (1.5 s) and ¹⁰³Mo (67.5 s) is presented. From (n,γ) studies, very elaborate level and γ information in ¹⁰³Ru was obtained. The excited states of ¹⁰³Ru have been studied via ¹⁰²Ru(d,p) and ¹⁰⁴Ru(d,t) experiments. The β⁻ decay of ¹⁰³Ru (39.26 d) was studied extensively while the ¹⁰³Ag ε decay was also reinvestigated. Excited states of ¹⁰³Pd were studied via ¹⁰⁴Pd(d,t),(³He,α). The ¹⁰³Cd ε decay (7.3 min) has been investigated by several groups. (HI,xnypγ) reactions were used in the study of the high spin states in ¹⁰³Ag. For the first time, experimental information is shown for the decay of ¹⁰³In (65 s). Theoretical studies on different properties of A=103 nuclei are reported in the adopted levels tables.
High resolution spectroscopy of 102Ru(d, p)103Ru and 104Ru(p, d)103Ru reactions
1982, Nuclear Physics, Section A
The high resolution magnetic spectrometer BIG KARL was used to investigate the low-lying states of ¹⁰³Ru by ¹⁰²Ru(d, p) and ¹⁰⁴Ru(p,d) reactions at E_d = 45 MeV and E_p = 29 MeV. The resolution of $ΔE E = (1.7–2.5) × 10^{−4}$ was sufficient to separate most of the known states up to E_x = 1 MeV excitation energy. For these levels differential cross sections have been measured in the range of θ_lab = 4°–43°. A DWBA analysis has been employed in order to determine orbital angular momenta and obtain spectroscopic factors. These were used to make a number of tentative spin and parity assignments. In addition several weakly excited states in ¹⁰³Ru could be identified and excitation energies have been determined to about ±2 keV.
High spin collective excitations in 101Ru
1982, Nuclear Physics, Section A
The energy level structure of ¹⁰¹Ru was studied using the reactions ¹⁰⁰Mo(α, 3n)¹⁰¹Ru and ¹⁰⁰Mo(³He, 2n)¹⁰¹Ru. Excitation functions, γγ coincidences and γ-ray angular distributions were measured. Three ΔI = 2 cascades proceeding to a $52^{+}$ , $72^{+}$ and $112^{−}$ state were observed. A decay scheme is presented showing energies up to 5849 keV and spins up to $352$ . The bands are discussed within the framework of the Nilsson model with Coriolis coupling in which the recoil effect has been properly introduced.

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^†: On leave from Oslo University, Oslo, Norway.

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Nuclear Physics A

Abstract

References (23)

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Cited by (23)

Nuclear Data Sheets for A = 103

Nuclear data sheets update for A = 103

Nuclear magnetic resonance on oriented <sup>103</sup>Ru in Fe

Nuclear data sheets for A = 103

High resolution spectroscopy of <sup>102</sup>Ru(d, p)<sup>103</sup>Ru and <sup>104</sup>Ru(p, d)<sup>103</sup>Ru reactions

High spin collective excitations in <sup>101</sup>Ru