First identification of &lt;sup&gt;58&lt;/sup&gt;Zn &lt;em&gt;β&lt;/em&gt;-delayed proton emission

Ciemny, A. A.; Dominik, W.; Ginter, T. N.; Grzywacz, R.; Janas, Z.; Kuich, M.; C., Mazzocchi,; Pfützner, M.; Pomorski, M.; Bazin, D.; Baumann, T.; Bezbakh, A. N.; Crider, B. P.; Ćwiok, M.; Go, S.; Kamiński, G.; Kolos, K.; Korgul, A.; Kwan, E.; Liddick, S. N.; Miernik, K.; Paulauskas, S. V.; Pereira, J.; Rogiński, T.; Rykaczewski, K. P.; Sumithtatachchi, C.; Xiao, Y.; Schatz, H.; Sarriguren, P.

doi:10.2172/1593568

Cited by 1 publication

(4 citation statements)

References 10 publications

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“…[20], but in tension with the Ref. [19] result of 27 ± 3 ms, which reported 25 times lower statistics in comparison to our measurement.…”

Section: Time(ms) Counts Per Mscontrasting

confidence: 65%

“…Figure 5: (color online) T 9 − ρ phase space the56 Ni bypass fraction in the rp-process, where T 9 is the temperature in GK and ρY p is in units of mol cm −3 . The present ±1σ uncertainties for 57 Zn t 1/2 , P βp and ME( 57 Zn) result in a maximal56 Ni bypass fraction between 17% and 14% (a,b) as compared to the previous constraints[19] showing a broader bypass range of 20% to 0% (c,d).…”

mentioning

confidence: 46%

“…In comparison with the results of Ref. [19], we restrict the 56 Ni bypass to within 14-17%, as compared to the prior range 0-20%, and establish the existence of the 56 Ni bypass.…”

Section: Time(ms) Counts Per Msmentioning

confidence: 79%

“…The 57 Zn βp branching ratio is presently constrained to (90 ± 10)% [19]. Prior measurements found a (78 ± 17)% βp branching [20].…”

mentioning

confidence: 96%

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$^{57}$Zn $β$-delayed proton emission establishes the $^{56}$Ni $rp$-process waiting point bypass

Saxena,

Ong,

Meisel

et al. 2022

Preprint

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We measured the 57 Zn β-delayed proton (βp) and γ emission at the National Superconducting Cyclotron Laboratory. We find a 57 Zn half-life of 43.6 ± 0.2 ms, βp branching ratio of (84.7 ± 1.4)%, and identify four transitions corresponding to the exotic β-γ-p decay mode, the second such identification in the f p-shell. The p/γ ratio was used to correct for isospin mixing while determining the 57 Zn mass via the isobaric multiplet mass equation. Previously, it was uncertain as to whether the rp-process flow could bypass the textbook waiting point 56 Ni for astrophysical conditions relevant to Type-I X-ray bursts. Our results definitively establish the existence of the 56 Ni bypass, with 14-17% of the rp-process flow taking this route.

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“…[20], but in tension with the Ref. [19] result of 27 ± 3 ms, which reported 25 times lower statistics in comparison to our measurement.…”

Section: Time(ms) Counts Per Mscontrasting

confidence: 65%

mentioning

confidence: 46%

“…In comparison with the results of Ref. [19], we restrict the 56 Ni bypass to within 14-17%, as compared to the prior range 0-20%, and establish the existence of the 56 Ni bypass.…”

Section: Time(ms) Counts Per Msmentioning

confidence: 79%

“…The 57 Zn βp branching ratio is presently constrained to (90 ± 10)% [19]. Prior measurements found a (78 ± 17)% βp branching [20].…”

mentioning

confidence: 96%

See 2 more Smart Citations

$^{57}$Zn $β$-delayed proton emission establishes the $^{56}$Ni $rp$-process waiting point bypass

Saxena,

Ong,

Meisel

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

First identification of <sup>58</sup>Zn <em>β</em>-delayed proton emission

Cited by 1 publication

References 10 publications

$^{57}$Zn $β$-delayed proton emission establishes the $^{56}$Ni $rp$-process waiting point bypass

$^{57}$Zn $β$-delayed proton emission establishes the $^{56}$Ni $rp$-process waiting point bypass

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