Congruence of decay chains of elements 113, 115, and 117

Ulrika Forsberg; Claes Fahlander; Dirk Rudolph

doi:10.1051/epjconf/201613102003

Congruence of decay chains of elements 113, 115, and 117

Ulrika Forsberg, Claes Fahlander, Dirk Rudolph

Nuclear physics

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Abstract

Superheavy element research relies heavily on the detection of correlated decay chains. When several chains have been detected, it is natural to ask whether they form one congruent set, or whether they should be further divided into subsets. To statistically assess the congruence between the chains in a data set, we developed a procedure to calculate a Figure-of-Merit for low-number statistics. In this work, the method is applied to the world data set of odd-Z superheavy nuclei with Z ≥ 113. Some of the postulated sets of chains are found to be congruent, while others are not. The findings are of relevance for the IUPAC and IUPAP approvals of the new elements Z = 113, 115, and 117.

Original language	English
Title of host publication	Nobel Symposium NS 160 – Chemistry and Physics of Heavy and Superheavy Elements
Subtitle of host publication	EPJ Web of Conferences
Editors	Dirk Rudolph
Publisher	EDP Sciences
Number of pages	7
Volume	131
ISBN (Electronic)	978-2-7598-9011-8
DOIs	https://doi.org/10.1051/epjconf/201613102003
Publication status	Published - 2016 Dec 1
Event	Nobel Symposium NS160: Chemistry and Physics of Heavy and Superheavy Elements - Bäckaskog Castle, Kristianstad, Sweden Duration: 2016 May 29 → 2016 Jun 3 Conference number: 160 http://www.nuclear.lu.se/ns160/

Conference

Conference	Nobel Symposium NS160
Abbreviated title	NS160
Country/Territory	Sweden
City	Bäckaskog Castle, Kristianstad
Period	2016/05/29 → 2016/06/03
Internet address	http://www.nuclear.lu.se/ns160/

Subject classification (UKÄ)

Subatomic Physics

Free keywords

superheavy elements
decay chain correlations

Access to Document

10.1051/epjconf/201613102003Licence: CC BY

3 Article
1 Review article

Results and plans for nuclear spectroscopy of superheavy nuclei: the Lund perspective
Rudolph, D., 2022 Dec 12, In: European Physical Journal A. 58, 12, 19 p., 242.
Research output: Contribution to journal › Review article › peer-review

Open Access
Fusion reaction ⁴⁸Ca + ²⁴⁹Bk leading to formation of the element Ts (Z=117)
Khuyagbaatar, J., Yakushev, A., Düllmann, C. E., Ackermann, D., Andersson, L. L., Asai, M., Block, M., Boll, R. A., Brand, H., Cox, D. M., Dasgupta, M., Derkx, X., Di Nitto, A., Eberhardt, K., Even, J., Evers, M., Fahlander, C., Forsberg, U., Gates, J. M., Gharibyan, N., & 52 othersGolubev, P., Gregorich, K. E., Hamilton, J. H., Hartmann, W., Herzberg, R. D., Heßberger, F. P., Hinde, D. J., Hoffmann, J., Hollinger, R., Hübner, A., Jäger, E., Kindler, B., Kratz, J. V., Krier, J., Kurz, N., Laatiaoui, M., Lahiri, S., Lang, R., Lommel, B., Maiti, M., Miernik, K., Minami, S., Mistry, A., Mokry, C., Nitsche, H., Omtvedt, J. P., Pang, G. K., Papadakis, P., Renisch, D., Roberto, J., Rudolph, D., Runke, J., Rykaczewski, K. P., Sarmiento, L. G., Schädel, M., Schausten, B., Semchenkov, A., Shaughnessy, D. A., Steinegger, P., Steiner, J., Tereshatov, E. E., Thörle-Pospiech, P., Tinschert, K., Torres De Heidenreich, T., Trautmann, N., Türler, A., Uusitalo, J., Ward, D. E., Wegrzecki, M., Wiehl, N., Van Cleve, S. M. & Yakusheva, V., 2019 May 7, In: Physical Review C. 99, 5, 16 p., 054306.
Research output: Contribution to journal › Article › peer-review

Open Access
File
102 Downloads (Pure)
A new assessment of the alleged link between element 115 and element 117 decay chains
Forsberg, U., Rudolph, D., Fahlander, C., Golubev, P., Sarmiento, L. G., Åberg, S., Block, M., Düllmann, C. E., Heßberger, F. P., Kratz, J. V. & Yakushev, A., 2016 Sept 10, In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. 760, p. 293-296 4 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
1788 Downloads (Pure)

1 Active

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

File

Cite this

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title = "Congruence of decay chains of elements 113, 115, and 117",

abstract = "Superheavy element research relies heavily on the detection of correlated decay chains. When several chains have been detected, it is natural to ask whether they form one congruent set, or whether they should be further divided into subsets. To statistically assess the congruence between the chains in a data set, we developed a procedure to calculate a Figure-of-Merit for low-number statistics. In this work, the method is applied to the world data set of odd-Z superheavy nuclei with Z ≥ 113. Some of the postulated sets of chains are found to be congruent, while others are not. The findings are of relevance for the IUPAC and IUPAP approvals of the new elements Z = 113, 115, and 117.",

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author = "Ulrika Forsberg and Claes Fahlander and Dirk Rudolph",

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doi = "10.1051/epjconf/201613102003",

language = "English",

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publisher = "EDP Sciences",

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Forsberg, U, Fahlander, C & Rudolph, D 2016, Congruence of decay chains of elements 113, 115, and 117. in D Rudolph (ed.), Nobel Symposium NS 160 – Chemistry and Physics of Heavy and Superheavy Elements: EPJ Web of Conferences. vol. 131, 02003, EDP Sciences, Nobel Symposium NS160, Bäckaskog Castle, Kristianstad, Sweden, 2016/05/29. https://doi.org/10.1051/epjconf/201613102003

Congruence of decay chains of elements 113, 115, and 117. / Forsberg, Ulrika; Fahlander, Claes ; Rudolph, Dirk.
Nobel Symposium NS 160 – Chemistry and Physics of Heavy and Superheavy Elements: EPJ Web of Conferences. ed. / Dirk Rudolph. Vol. 131 EDP Sciences, 2016. 02003.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - Congruence of decay chains of elements 113, 115, and 117

AU - Forsberg, Ulrika

AU - Fahlander, Claes

AU - Rudolph, Dirk

N1 - Conference code: 160

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Superheavy element research relies heavily on the detection of correlated decay chains. When several chains have been detected, it is natural to ask whether they form one congruent set, or whether they should be further divided into subsets. To statistically assess the congruence between the chains in a data set, we developed a procedure to calculate a Figure-of-Merit for low-number statistics. In this work, the method is applied to the world data set of odd-Z superheavy nuclei with Z ≥ 113. Some of the postulated sets of chains are found to be congruent, while others are not. The findings are of relevance for the IUPAC and IUPAP approvals of the new elements Z = 113, 115, and 117.

AB - Superheavy element research relies heavily on the detection of correlated decay chains. When several chains have been detected, it is natural to ask whether they form one congruent set, or whether they should be further divided into subsets. To statistically assess the congruence between the chains in a data set, we developed a procedure to calculate a Figure-of-Merit for low-number statistics. In this work, the method is applied to the world data set of odd-Z superheavy nuclei with Z ≥ 113. Some of the postulated sets of chains are found to be congruent, while others are not. The findings are of relevance for the IUPAC and IUPAP approvals of the new elements Z = 113, 115, and 117.

KW - superheavy elements

KW - decay chain correlations

U2 - 10.1051/epjconf/201613102003

DO - 10.1051/epjconf/201613102003

M3 - Paper in conference proceeding

VL - 131

BT - Nobel Symposium NS 160 – Chemistry and Physics of Heavy and Superheavy Elements

A2 - Rudolph, Dirk

PB - EDP Sciences

T2 - Nobel Symposium NS160

Y2 - 29 May 2016 through 3 June 2016

ER -

Congruence of decay chains of elements 113, 115, and 117

Abstract

Conference

Subject classification (UKÄ)

Free keywords

Access to Document

Fingerprint

Research output

Results and plans for nuclear spectroscopy of superheavy nuclei: the Lund perspective

Fusion reaction 48Ca + 249Bk leading to formation of the element Ts (Z=117)

A new assessment of the alleged link between element 115 and element 117 decay chains

Projects

ChaSE Lundium: Characterization of New Superheavy Elements

Cite this

Fusion reaction ⁴⁸Ca + ²⁴⁹Bk leading to formation of the element Ts (Z=117)