ADOPTED LEVELS, GAMMAS for 62Ti
Authors: Balraj Singh, Huang Xiaolong, and Wang Xianghan | Citation: Nucl. Data Sheets 204, 1 (2025) | Cutoff date: 30-Jun-2023
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=13010 keV SY | S(n)= 3900 keV SY | S(p)= 19900 keV SY | Q(α)= -13090 keV SY | ||
Reference: 2021WA16 |
References: | |||
A | 1H(63V,2pγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
0 | A | 0+ | % β- = 100 % β-n = ? % B-3N = ? % β-2n = ? | ||||
683 10 | A | (2+) | 683 10 | 100 | 0 | 0+ | |
1506 22 | A | (4+) | 823 20 | 100 | 683 | (2+) |
E(level): From Eγ values
Jπ(level): As given in Fig. 2a of 2020Co01, based on level-energy and Jπ systematics in the neighboring even-even nuclides with n=40 and Z=20-32, and also from model calculations.
I(γ): Based on cross section measurements in 1H(63V,2p)
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 0+ | % β- = 100 % β-n = ? % B-3N = ? % β-2n = ? | Theoretical T1/2(β)=12.9 ms, %β-n=3.86, 4.0; %β-2n=0.146, 0.099; %β-3n=0.0 (2021Mi17, two values for a decay mode refer to different fission barriers). E(level): Theoretical T1/2(β)=12.9 ms, %β-n=3.86, 4.0; %β-2n=0.146, 0.099; %β-3n=0.0 (2021Mi17, two values for a decay mode refer to different fission barriers). |
2009Ta24, 2009Ta05: 62Ti identified by fragmentation of 76Ge beam at 132 MeV/nucleon with Be and W targets at NSCL facility using A1900 fragment separator combined with S800 analysis beam line to form a two- stage separator system. The transmitted fragments were analyzed event-by-event in terms of momentum and particle identification. The nuclei of interest were stopped in eight Si PIN diodes (50x50 mm2) which provided measurement of energy loss, nuclear charge and total kinetic energy. The time-of-flight of each particle that reached the detector stack was measured in four different ways using plastic scintillators, Si detectors, and parallel-plate avalanche counters. The simultaneous measurement of ΔE signals, magnetic rigidity, total kinetic energy and time-of-flight (ToF) provided unambiguous identification of the atomic number, charge state and mass number.
2020Mi13: measured mass excess using time-of-flight magnetic-rigidity technique at RIBF-RIKEN facility.
Theoretical nuclear structure calculations:
2022Ho02: calculated quadrupole deformation parameter β2, S(2n), rms matter radius, hexadecapole deformation parameter β4, difference of the charge square radii, diffuseness parameters, occupation of highly elongated intruder orbitals and effect on quadrupole and hexadecapole deformations using Skyrme-Hartree-Fock method in three-dimensional coordinate space.
2022Ko04: calculated ground state energy, charge rms radius using coupled cluster (α) and ab-initio density functional theory, extended to open-shell deformed nuclei.
2022Ya23: theory: structure: calculated binding energy, charge radius, quadrupole deformation, and pairing energy using relativistic mean-field (RMF) formalism
2021Co14: calculated S(2n), energy of the first 2+ state, effective single-particle energies (ESPEs), neutron-neutron monopole matrix elements using shell-model with an effective Hamiltonian from many-body perturbation theory using 40Ca as a closed core, and three-body contributions through density-dependent two-body matrix elements (TBME) derived within a microscopic approach from chiral forces.
2018Sa40: calculated potential energy curves, T1/2, Q(β-), β-n probability, Gamow-Teller strength distributions using constrained HF+BCS with Skyrme force SLy4.
2015Wa11: calculated potential energy surfaces, S(2p), excitation energies and B(E2), Jπ, neutron and proton single-particle levels using relativistic mean-field + BCS method with α(p)-PK1 functional.
2014Co04: calculated energies and B(E2) values of first 2+ state using realistic shell-model calculations with two different model spaces.
Theoretical calculations: consult the NSR database at for 16 primary references for nuclear structure, and two for decay modes and half-life.
2012Ca30: calculated energy levels, Jπ, electric quadrupole and dipole magnetic moments using shell model with FPD6 and GXPF1 interactions.
2010Le20: calculated levels, Jπ, B(E2), quadrupole moment, occupation of the neutron intruder orbitals and percentage of particle-hole excitations using interacting shell-model framework in full pf valence space based on 48Ca core and effective interaction based on γ matrix; discussed shell evolution and island of inversion around n=40.
2009Ga41: calculated single-particle energies, Nilsson diagrams, potential energy curves, neutron and proton pairing energy curves, excitation energies, spectroscopic quadrupole moments, and B(E2) using Hartree-Fock-Bogoliubov (HFB) approach with Gogny D1S effective interaction
2008Gu03: calculated potential energy surfaces and ground state deformation using relativistic mean field theory.
Other theory references: 12 for structure and two for decay in the NSR database, also listed in this dataset as ’document’ records.
Q-value: Estimated uncertainties (2021Wa16): 480 for Q(β-), 500 for S(n), 720 for S(p), 640 for Q(α)
Q-value: S(2n)=6240 470, S(2p)=37780 810, Q(β-n)=9910 460 (syst,2021Wa16). Q(β-2n)=4750 440, Q(β-3n)=1200 420 (syst, deduced by evaluator from relevant mass excesses in 2021Wa16)