A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
First investigation on the isomeric ratio in multinucleon transfer reactions : Entrance channel effects on the spin distribution (2024)


Kumar, D., Dickel, T., Zadvornaya, A., Beliuskina, O., Kankainen, A., Constantin, P., Purushothaman, S., Spataru, A., Stryjczyk, M., Al Ayoubi, L., Brunet, M., Canete, L., Delafosse, C., de Groote, R.P., de Roubin, A., Eronen, T., Ge, Z., Gins, W., Hornung, C., . . . Winfield, J. (2024). First investigation on the isomeric ratio in multinucleon transfer reactions : Entrance channel effects on the spin distribution. Physics Letters B, 853, Article 138654. https://doi.org/10.1016/j.physletb.2024.138654


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Kumar, D.; Dickel, T.; Zadvornaya, A.; Beliuskina, O.; Kankainen, A.; Constantin, P.; Purushothaman, S.; Spataru, A.; Stryjczyk, M.; Al Ayoubi, L.; et al.

Lehti tai sarja: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Julkaisuvuosi: 2024

Volyymi: 853

Artikkelinumero: 138654

Kustantaja: Elsevier

Julkaisumaa: Alankomaat

Julkaisun kieli: englanti

DOI: https://doi.org/10.1016/j.physletb.2024.138654

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/94458

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/2401.06206


Tiivistelmä

The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure the isomeric ratios (IRs) of 211Po isomer (25/2+) and its ground state (9/2+) at the IGISOL facility using a 945 MeV 136Xe beam impinged on 209Bi and natPb targets. The dominant production of isomers compared to the corresponding ground states was consistently revealed in the 𝛼-decay spectra. Deduced IR of 211Po populated through the 136Xe+natPb reaction was found to have an enhancement of ≈1.8-times than that observed for the 136Xe+209Bi. State-of-the-art Langevin-type model calculations have been utilized to estimate the spin distribution of an MNT residue. The computations qualitatively corroborate with the considerable increase in the IRs of 211Po produced from 136Xe+natPb compared to 136Xe+209Bi. Theoretical investigations indicate a weak dependence of target spin on the IRs. The enhancement of the 211Po isomer in the 136Xe+natPb over 136Xe+209Bi can be attributed to the different proton (𝑝)-transfer production routes. Estimations demonstrate an increment in the angular momentum transfer, favorable for isomer production, with increasing projectile energy. Comparative analysis reveals the two entrance channel parameters, projectile mass and 𝑝-transfer channels, strongly influencing the population of the high-spin isomer of 211Po (25/2+). This letter reports the first experimental and theoretical study on the IRs of nuclei formed from two different 𝑝-transfer channels via two independent MNT reactions.


YSO-asiasanat: ydinfysiikka; polonium; isotoopit; spin (kvanttimekaniikka)

Vapaat asiasanat: multinucleon transfer (MNT) reaction; isomeric-to-ground state ratio (IR); gas-filled stopping cells; 𝛼-spectra


Liittyvät organisaatiot

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Hankkeet, joissa julkaisu on tehty


OKM-raportointi: Kyllä

Alustava JUFO-taso: 3


Viimeisin päivitys 2024-28-04 klo 07:32