The level scheme of 171Tm

Raeside, D. E.; Reidy, J. J.; Wiedenbeck, M. L.

doi:10.1016/0375-9474(68)90282-0

Cited by 14 publications

(3 citation statements)

References 17 publications

(4 reference statements)

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“…The present experiments clearly show that it represents an M 1 transition from the 1284.7 keV level to the well-known 912.8 keV level in agreement with Raeside et al (1968), but in disagreement with the other experimenters. The evidence for this assignment is given in Fig.…”

Section: Coincidence Measurementssupporting

confidence: 82%

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Level Structure of ¹⁷¹Tm

Graham¹,

Geiger²,

Johns³

1972

Can. J. Phys.

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The properties of the γ-ray transitions in 171Tm, following beta decay of 7.5 h 171Er, have been studied using an iron-free π√2 beta spectrometer and Ge(Li) detectors, singly and in coincidence. The multipolarities of 8 lower-energy γ transitions have been established from a study of L- or M-subshell-internal-conversion lines. The measured K-line intensities of 20 higher-energy transitions yield K conversion coefficients and hence additional multipolarity assignments. Gamma-ray energy measurements, together with an extensive series of gamma–gamma coincidence experiments, have been used to establish the role of 59 (out of 65) γ transitions in the 171Tm level scheme. Sixteen excited states are identified at energies of 5.025 (3/2+), 116.6 (5/2+), 129.0 (7/2+), 326.7* (9/2+), 424.8 (7/2−), 635.4 (7/2+), 675.7 (3/2+), 737.2 (5/2+), 822.3* (7/2+), 912.8 (5/2+), 998.6 (7/2+), 1225.5* (3/2, 5/2, or 7/2+), 1284.7* (5/2+), 1296.3*, 1391.2*, and 1400.5* (5/2+) keV. The asterisks indicate levels which are new or at variance with those proposed by some other workers. The coincidence data does not support a level at 861 keV proposed by two other groups of workers on the basis of energy sums. Nilsson orbital assignments are proposed and discussed for 12 levels.

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Section: Coincidence Measurementssupporting

confidence: 82%

“…18) have been included in all the decay schemes proposed in the last decade (Hatch and Boehm 1957;Cranston et al 1958;Artna and Johns 1961 ;El-Nesr and El-Asaar 1966;Megli et al 1968;Raeside et al 1968;Geiger et al 1968a, b ;Graham et al 1968a, b ) and require no discussion here.…”

Section: Coincidence Measurementsmentioning

confidence: 99%

Level Structure of ¹⁷¹Tm

Graham¹,

Geiger²,

Johns³

1972

Can. J. Phys.

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“…The levels scheme of 171Tm has been investigated in recent years [1][2][3][4][5][6] (Fig. The levels scheme of 171Tm has been investigated in recent years [1][2][3][4][5][6] (Fig.…”

Section: Introductionmentioning

confidence: 99%

Properties of the 635.4 keV level in171Tm

et al. 1978

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The properties of some high excited states of 171Tm have been studied using Ge(Li) detectors. The directional angular correlation measurements for 277.4-210.5 keV cascade are in agreement with the spins of the 635.4 keV O and 912.8 keV(~) levels. The magnetic moment #=(1.15_+0.21) /~N of the 635.4 keV level was determined by integral perturbed angular correlation (IPAC) in external magnetic field.

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