Low-lying states in 219Ra and 215Rn: Sampling microsecond α-decaying nuclei

A. Såmark-Roth; L. G. Sarmiento; D. Rudolph; J. Ljungberg; B. G. Carlsson; C. Fahlander; U. Forsberg; P. Golubev; I. Ragnarsson; D. Ackermann; L. L. Andersson; M. Block; H. Brand; D. M. Cox; A. Di Nitto; Ch E. Düllmann; K. Eberhardt; J. Even; J. M. Gates; J. Gerl; K. E. Gregorich; C. J. Gross; R. D. Herzberg; F. P. Heßberger; E. Jäger; J. Khuyagbaatar; B. Kindler; I. Kojouharov; J. V. Kratz; J. Krier; N. Kurz; B. Lommel; A. Mistry; C. Mokry; J. P. Omtvedt; P. Papadakis; J. Runke; K. Rykaczewski; M. Schädel; H. Schaffner; B. Schausten; P. Thörle-Pospiech; N. Trautmann; T. Torres; A. Türler; A. Ward; N. Wiehl; A. Yakushev

doi:10.1103/PhysRevC.98.044307

Low-lying states in ²¹⁹Ra and ²¹⁵Rn: Sampling microsecond α-decaying nuclei

A. Såmark-Roth, L. G. Sarmiento, D. Rudolph, J. Ljungberg, B. G. Carlsson, C. Fahlander, U. Forsberg, P. Golubev, I. Ragnarsson, D. Ackermann, L. L. Andersson, M. Block, H. Brand, D. M. Cox, A. Di Nitto, Ch E. Düllmann, K. Eberhardt, J. Even, J. M. Gates, J. GerlK. E. Gregorich, C. J. Gross, R. D. Herzberg, F. P. Heßberger, E. Jäger, J. Khuyagbaatar, B. Kindler, I. Kojouharov, J. V. Kratz, J. Krier, N. Kurz, B. Lommel, A. Mistry, C. Mokry, J. P. Omtvedt, P. Papadakis, J. Runke, K. Rykaczewski, M. Schädel, H. Schaffner, B. Schausten, P. Thörle-Pospiech, N. Trautmann, T. Torres, A. Türler, A. Ward, N. Wiehl, A. Yakushev

Mathematical Physics

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Abstract

Short-lived α-decaying nuclei "northeast" of ²⁰⁸Pb in the chart of nuclides were studied using the reaction ⁴⁸Ca+²⁴³Am with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even ²²⁰Ra and its odd-A neighbors, ²¹⁹Fr, and ^219,221Ra, with a focus on the ²¹⁹Ra→²¹⁵Rn decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of ²¹⁹Ra is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.

Original language	English
Article number	044307
Number of pages	11
Journal	Physical Review C
Volume	98
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.98.044307
Publication status	Published - 2018 Oct 9

Subject classification (UKÄ)

Subatomic Physics

Free keywords

alpha decay
half life
gamma-ray spectroscopy
pulse shape analysis
nuclear shell model
Nilsson-Strutinsky calculations

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10.1103/PhysRevC.98.044307

PhysRevC.98.044307Final published version, 1.5 MB

3 Article
2 Doctoral Thesis (compilation)

Nuclear Structure from a Novel Beyond-Mean-Field Model: Towards Super-Heavy Nuclei from Densities and Mean-Fields to Wave Functions and Observables
Ljungberg, J., 2024, Lund: Department of Physics, Lund University.
Research output: Thesis › Doctoral Thesis (compilation)

Open Access
File
α decay of the neutron-deficient isotope ¹⁹⁰At
Andreyev, A. N., Seweryniak, D., Andel, B., Antalic, S., Doherty, D. T., Korichi, A., Barton, C., Canete, L., Carpenter, M. P., Clark, R. M., Copp, P. A., Cubiss, J. G., Heery, J., Hrabar, Y., Huang, H., Huang, T., Karayonchev, V., Kondev, F. G., Lauritsen, T. & Lotay, G. & 12 others, Müller-Gatermann, C., Page, C., Potterveld, D. H., Regan, P. H., Reviol, W., Rudolph, D., Siciliano, M., Sidhu, R. S., Sitarčík, A., Woods, P. J., Yue, Z. & Zhang, W., 2023 Sept 1, In: Physical Review C. 108, 3, 4 p., 034303.
Research output: Contribution to journal › Article › peer-review

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File
38 Downloads (Pure)
Spectroscopy along Decay Chains of Element 114, Flerovium
Såmark-Roth, A., 2021, Lund: Lund University. 227 p.
Research output: Thesis › Doctoral Thesis (compilation)

Open Access
File

1 Finished
2 Active

ChaSE Lundium: Characterization of New Superheavy Elements
Rudolph, D. (PI), Åberg, S. (CoI), Carlsson, G. (CoI), Düllmann, C. E. (CoI), Golubev, P. (Researcher), Sarmiento Pico, L. (Researcher), Forsberg, U. (Researcher), Toivanen, J. (Researcher), Ward, D. (Researcher), Cox, D. (Researcher), Lorenz, C. (Research student), Såmark-Roth, A. (Research student), Albertsson, M. (Research student), Ljungberg, J. (Research student), Hrabar, Y. (Research student), Lindholm, Y. (Administrator), Lindqvist, K. (Administrator), Lundberg, M. (Administrator) & Andersson, P. (Researcher)
Knut and Alice Wallenberg Foundation, The Nobel Foundation
2016/01/01 → 2026/12/31
Project: Research

File
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
Rudolph, D. (PI), Fahlander, C. (CoI), Golubev, P. (CoI), Sarmiento Pico, L. (CoI), Cox, D. (Researcher), Hrabar, Y. (Research student), Såmark-Roth, A. (Research student), Forsberg, U. (Researcher), Lorenz, C. (Research student), Lalovic, N. (Researcher), Lalovic, N. (Research student), Forsberg, U. (Research student), Gellanki, J. (Research student), Hoischen, R. (Research student), Johansson, E. (Research student), Andersson, L.-L. (Research student), du Rietz, R. (Research student), Ekman, J. (Research student) & Andreoiu, C. (Research student)
Swedish Research Council
2002/01/01 → 2027/12/31
Project: Research
Spectroscopy along Decay Chains of Element 114, Flerovium
Såmark-Roth, A. (PI), Rudolph, D. (Supervisor) & Sarmiento Pico, L. (Assistant supervisor)
2016/12/01 → 2021/06/18
Project: Dissertation

Computing and Storage Facility for Subatomic Physics
Smirnova, O. (Manager)
Particle and nuclear physics
Infrastructure
Platform for Advanced Radiaton Detectors
Golubev, P. (Manager)
Department of Physics
Infrastructure

4 Presentation

Low-lying states in Ra-219 and Rn-215: sampling microsecond α-decaying nuclei
Såmark-Roth, A. (Speaker)
2018 Sept 25
Activity: Talk or presentation › Presentation
Low-lying states in Ra-219 and Rn-215: sampling microsecond α-decaying nuclei
Såmark-Roth, A. (Role not specified)
2018 May 9
Activity: Talk or presentation › Presentation
Sub-microsecond alpha particle emitters
Såmark-Roth, A. (Role not specified)
2017 Oct 10
Activity: Talk or presentation › Presentation

Cite this

Såmark-Roth, A., Sarmiento, L. G., Rudolph, D., Ljungberg, J., Carlsson, B. G., Fahlander, C., Forsberg, U., Golubev, P., Ragnarsson, I., Ackermann, D., Andersson, L. L., Block, M., Brand, H., Cox, D. M., Di Nitto, A., Düllmann, C. E., Eberhardt, K., Even, J., Gates, J. M., ... Yakushev, A. (2018). Low-lying states in ²¹⁹Ra and ²¹⁵Rn: Sampling microsecond α-decaying nuclei. Physical Review C, 98(4), Article 044307. https://doi.org/10.1103/PhysRevC.98.044307

@article{a0027d1f8ff342998fed8268676f57b5,

title = "Low-lying states in 219Ra and 215Rn: Sampling microsecond α-decaying nuclei",

abstract = "Short-lived α-decaying nuclei {"}northeast{"} of 208Pb in the chart of nuclides were studied using the reaction 48Ca+243Am with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even 220Ra and its odd-A neighbors, 219Fr, and 219,221Ra, with a focus on the 219Ra→215Rn decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of 219Ra is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.",

keywords = "alpha decay, half life, gamma-ray spectroscopy, pulse shape analysis, nuclear shell model, Nilsson-Strutinsky calculations",

author = "A. S{\aa}mark-Roth and Sarmiento, {L. G.} and D. Rudolph and J. Ljungberg and Carlsson, {B. G.} and C. Fahlander and U. Forsberg and P. Golubev and I. Ragnarsson and D. Ackermann and Andersson, {L. L.} and M. Block and H. Brand and Cox, {D. M.} and {Di Nitto}, A. and D{\"u}llmann, {Ch E.} and K. Eberhardt and J. Even and Gates, {J. M.} and J. Gerl and Gregorich, {K. E.} and Gross, {C. J.} and Herzberg, {R. D.} and He{\ss}berger, {F. P.} and E. J{\"a}ger and J. Khuyagbaatar and B. Kindler and I. Kojouharov and Kratz, {J. V.} and J. Krier and N. Kurz and B. Lommel and A. Mistry and C. Mokry and Omtvedt, {J. P.} and P. Papadakis and J. Runke and K. Rykaczewski and M. Sch{\"a}del and H. Schaffner and B. Schausten and P. Th{\"o}rle-Pospiech and N. Trautmann and T. Torres and A. T{\"u}rler and A. Ward and N. Wiehl and A. Yakushev",

year = "2018",

month = oct,

day = "9",

doi = "10.1103/PhysRevC.98.044307",

language = "English",

volume = "98",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "4",

}

Såmark-Roth, A, Sarmiento, LG , Rudolph, D, Ljungberg, J, Carlsson, BG , Fahlander, C, Forsberg, U, Golubev, P , Ragnarsson, I, Ackermann, D, Andersson, LL, Block, M, Brand, H, Cox, DM, Di Nitto, A, Düllmann, CE, Eberhardt, K, Even, J, Gates, JM, Gerl, J, Gregorich, KE, Gross, CJ, Herzberg, RD, Heßberger, FP, Jäger, E, Khuyagbaatar, J, Kindler, B, Kojouharov, I, Kratz, JV, Krier, J, Kurz, N, Lommel, B, Mistry, A, Mokry, C, Omtvedt, JP, Papadakis, P, Runke, J, Rykaczewski, K, Schädel, M, Schaffner, H, Schausten, B, Thörle-Pospiech, P, Trautmann, N, Torres, T, Türler, A, Ward, A, Wiehl, N & Yakushev, A 2018, 'Low-lying states in ²¹⁹Ra and ²¹⁵Rn: Sampling microsecond α-decaying nuclei', Physical Review C, vol. 98, no. 4, 044307. https://doi.org/10.1103/PhysRevC.98.044307

TY - JOUR

T1 - Low-lying states in 219Ra and 215Rn

T2 - Sampling microsecond α-decaying nuclei

AU - Såmark-Roth, A.

AU - Sarmiento, L. G.

AU - Rudolph, D.

AU - Ljungberg, J.

AU - Carlsson, B. G.

AU - Fahlander, C.

AU - Forsberg, U.

AU - Golubev, P.

AU - Ragnarsson, I.

AU - Ackermann, D.

AU - Andersson, L. L.

AU - Block, M.

AU - Brand, H.

AU - Cox, D. M.

AU - Di Nitto, A.

AU - Düllmann, Ch E.

AU - Eberhardt, K.

AU - Even, J.

AU - Gates, J. M.

AU - Gerl, J.

AU - Gregorich, K. E.

AU - Gross, C. J.

AU - Herzberg, R. D.

AU - Heßberger, F. P.

AU - Jäger, E.

AU - Khuyagbaatar, J.

AU - Kindler, B.

AU - Kojouharov, I.

AU - Kratz, J. V.

AU - Krier, J.

AU - Kurz, N.

AU - Lommel, B.

AU - Mistry, A.

AU - Mokry, C.

AU - Omtvedt, J. P.

AU - Papadakis, P.

AU - Runke, J.

AU - Rykaczewski, K.

AU - Schädel, M.

AU - Schaffner, H.

AU - Schausten, B.

AU - Thörle-Pospiech, P.

AU - Trautmann, N.

AU - Torres, T.

AU - Türler, A.

AU - Ward, A.

AU - Wiehl, N.

AU - Yakushev, A.

PY - 2018/10/9

Y1 - 2018/10/9

N2 - Short-lived α-decaying nuclei "northeast" of 208Pb in the chart of nuclides were studied using the reaction 48Ca+243Am with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even 220Ra and its odd-A neighbors, 219Fr, and 219,221Ra, with a focus on the 219Ra→215Rn decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of 219Ra is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.

AB - Short-lived α-decaying nuclei "northeast" of 208Pb in the chart of nuclides were studied using the reaction 48Ca+243Am with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even 220Ra and its odd-A neighbors, 219Fr, and 219,221Ra, with a focus on the 219Ra→215Rn decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of 219Ra is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.

KW - alpha decay

KW - half life

KW - gamma-ray spectroscopy

KW - pulse shape analysis

KW - nuclear shell model

KW - Nilsson-Strutinsky calculations

U2 - 10.1103/PhysRevC.98.044307

DO - 10.1103/PhysRevC.98.044307

M3 - Article

AN - SCOPUS:85054748434

SN - 2469-9985

VL - 98

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044307

ER -

Low-lying states in 219Ra and 215Rn: Sampling microsecond α-decaying nuclei

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Low-lying states in ²¹⁹Ra and ²¹⁵Rn: Sampling microsecond α-decaying nuclei