List of levels for 58TI

Authors: Caroline D. Nesaraja, Scott D. Geraedts and Balraj Singh | Citation: Nucl. Data Sheets 111, 897 (2010) | Cutoff date: 12-Jan-2010

1992We04: ⁹Be(⁸⁶Kr,X) E=500 MeV/nucleon. Mass separation using magnetic spectrometer. Isotope identification with zero-degree magnetic spectrometer, time-of-flight and energy loss measurements.

1999So20 (also 1999Le67): ⁵⁸Ti from ⁵⁸Ni(⁸⁶Kr,X) reaction at 60.4 MeV/nucleon. Measured Eβ, Iβ(t), isotopic half-life.

2002MaZN: Fragmentation of ⁸⁶Kr beam, LISE spectrometer, measured isotopic half-life

2005Ga01 (also 2003So21): ⁵⁸Ti produced in fragmentation of ⁷⁶Ge^30⁺ beam on a ⁵⁸Ni target at 61.8 MeV/nucleon. LISE3 achromatic spectrometer used to separate fragments; magnetic rigidity was tuned to optimize transmission of ⁶²V and ⁶⁴Cr fragments. Transmitted nuclei were identified by three consecutive Si detectors where two were used for energy loss and time-of-flight measurements while the third was used to determine their residual energies. Measured Eγ, Iγ, Iβ, γγ, βγ coin, γ(t), lifetimes with four Ge detectors placed around a thick Si telescope. Half-lives determined by fitting procedure involving five parameters: half-lives of mother, daughter and grand-daughter nuclei, the β-efficiency and the background rate over the 1 s collecting time.

2011Da08 (also 2002MaZN thesis): ⁵⁸Ti produced in fragmentation of 57.8 MeV/nucleon ⁸⁶Kr beam impinged on 50 mg/cm² thick tantalum target using LISE-2000 spectrometer at GANIL facility. Detector system included a three-element Si-detector telescope containing a double-sided silicon-strip detector (DSSSD) backed by a Si(Li) detector and surrounded by four clover type EXOGAM Ge detectors. Product identified by mass, atomic number, charge, energy loss and time of flight. Measured half-life

Theoretical nuclear structure calculations:

2014Ka03: calculated energy and B(E2) of first 2⁺ level

2012Ca30: calculated energy levels, J, p, electric quadrupole and dipole magnetic moments; shell model calculations

2006Ma23: calculated levels, spins and parities. Shell-model.

2008Gu03: calculated potential energy surfaces and g.s. deformation

Q-value: Estimated uncertainties (2012Wa38): ΔQ(β^-)=420, ΔS(n)=470, ΔS(p)=ΔQ(α)=640

Q-value: S(2n)=8050 420, S(2p)=31790 720, Q(β^-n)=5050 460 (2012Wa38,syst)

Q(β-)=9210 keV SY	S(n)= 5320 keV SY	S(p)= 17690 keV SY	Q(α)= -8760 keV SY
Reference: 2012WA38

References:
A	⁵⁸Sc β^- decay (12 MS)	B	¹H(⁵⁸Ti,⁵⁸Ti’γ)
C	⁹Be(⁶¹V,⁵⁸TiG)

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	Final Levels
0.0	A B C	0+	58 ms 9 % β^- = 100 % β^-n = ?
1047 4	B C	2+		1047 4	100	0.0	0+
2038 6	C	(4+)		991 4		1047	2+
2423 18 ?	B	(LE 3)		1376 18 ?		1047	2+
2657 7	C	(6+)		619 5		2038	(4+)
2881 27	B	(LE 3)		1835 27		1047	2+

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	0+	58 ms 9 % β^- = 100 % β^-n = ?	Theoretical %β^-n=1.1 (1997Mo25).
1047	2+		β₂(p,p’)=0.18 +5-6 (2013Su20, inelastic scattering). J^π(level): From systematics of even-even nuclides, energy consistent with shell-model predictions (2013Su20,2014Ga07).
2038	(4+)		J^π(level): From systematics of even-even nuclides, energy consistent with shell-model predictions (2013Su20,2014Ga07).
2423	(LE 3)		J^π(level): No assignment has been proposed in 2013Su20, but it is unlikely that a level of spin higher than 3 is populated in (p,p’) scattering. As discussed by 2014Ga07, this is the possibly the reason that (4⁺) and (6⁺) levels reported in (⁶¹V,⁵⁸Tiγ) reaction were not seen in the ¹H(⁵⁸Ti,⁵⁸Ti’) study.
2657	(6+)		J^π(level): From systematics of even-even nuclides, energy consistent with shell-model predictions (2013Su20,2014Ga07).
2881	(LE 3)		J^π(level): No assignment has been proposed in 2013Su20, but it is unlikely that a level of spin higher than 3 is populated in (p,p’) scattering. As discussed by 2014Ga07, this is the possibly the reason that (4⁺) and (6⁺) levels reported in (⁶¹V,⁵⁸Tiγ) reaction were not seen in the ¹H(⁵⁸Ti,⁵⁸Ti’) study.