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No abstract available

[en] The study of negative parity states is very limited in heavier even-even ^122-128Te-isotopes. In these nuclei, the negative parity states are mainly based on the 5^-, 7^- and 9^- states, with νh_11/2 ⊗ νs_1/2, νh_11/2 ⊗ νd_3/2 and νh_11/2 ⊗ νg_7/2 configurations, respectively. These states were predicted to have non-collective behaviour in ^122-128Te-isotopes, but later studies showed collective band structures associated with these configurations in even-even ^118-122Te. This makes interesting aspects to investigate the behaviour of negative parity states in heavier Te-isotopes. Hence, the present work is dedicated to investigate for negative parity bands in ¹²⁴Te

[en] We have measured the absolute wave numbers of 39 transitions of ¹³⁰Te₂ spanning the spectral region of 420.9-464.6 nm to an accuracy of better than 2 parts in 10⁹ by use of saturation spectroscopy and Fabry-Perot interferometry. These measurements provide a set of convenient and accurate transfer standards for laser wavelength calibration spanning the entire Stilbene-420 dye-tuning curve

[en] After a long period of research into the separating process, the isotopes separator, MEIRA, has begun its career of separating isotopes in practical quantities. In order to separate tellurium-124 (natural abundance 4.6%) at a purity in excess of 99.5% in a single separation from the natural element, without significantly degrading the production rate, various refinements and modifications were made. These modifications are discussed together with the results of isotope separations of tellurium before and after incorporation of these refinements. (orig.)

No abstract available

[en] A direct experiment searching for the neutrinoless double β decay of ¹³⁰Te is described. A half-life limit equal to 1.2 x 10²¹ years at the 68% confidence level is established. The leptonic charge nonconservation parameter corresponding to this limit is calculated on the basis of a two-nucleon model and found to be (3--5) x 10^-4

[en] The nuclei in A ∼ 120 region is known to be γ-soft. They are characterized by a few number of nucleons outside the shell-closure, which are sufficient to induce deformation in the system. Thus, the mass region is in itself a rich laboratory to study various structural effects associated with interplay of collective and non-collective excitations. The alignment of individual angular momenta along the rotational axis can generate a limited total angular momentum, thus terminating a given configuration. In the present work, we confirm the transitions observed in previous works and could extend the level scheme further to spin I ∼ 23ħ. The level scheme of "1"2"2Te highlights irregular structures with appearance of several decay branches above I"π= 14"+ state

[en] The excited states of ¹²⁶Te were populated via ¹²⁴Sn(⁷Li, p4nγ)¹²⁶Te fusion-evaporation reaction and few new γ lines were identified and placed in the level scheme. Also, the position of few earlier placed γ transitions were changed in the present work. The multipolarity of several prominent γ transitions were determined from angular correlation data (R_DCO) and used for spin assignment

[en] This work contains results of the research on centrifugal enrichment of ¹²⁰Te and ¹²²Te isotopes using non-steady state processes of separation. This method, also known as the method of 'remainder reduction', enabled the effective separation of these isotopes with enrichments of 99.9% in gram quantities. ¹²⁰Te and ¹²²Te have never been produced before with such high enrichment