ADOPTED LEVELS, GAMMAS for 25Ne

Authors: M. Shamsuzzoha Basunia, Anagha Chakraborty |  Citation: Nucl. Data Sheets 205, 1 (2025) |  Cutoff date: 31-May-2025 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=7334 keV 8S(n)= 4155 keV 29S(p)= 1.687×104 keV 10Q(α)= -12520 keV 30
Reference: 2021WA16,2023JA05

References:
  A  25F β- decay (142.6 MS)  B  26F β-n decay (2.2 MS)
  C  26F β-n decay (8.2 MS)  D  2H(24Ne,pγ),(26Ne,25NeG)
  E  9Be(26Ne,xγ)  F  C(36S,25NeG)
  G  26Mg(7Li,8B)  H  26Mg(13C,14O)
  I  208Pb(26Ne,25NeG) 

General Comments:

Q(β-) from recommended mass excess of -2023.5 78 based on the measured mass excess of -2023.8 keV 80 of 25Ne (2023Ja05) [Other: -2036 keV 29 (2021Wa16)] and mass excess of -9357.8 keV 12 of 25Na (2021Wa16). Other: Q(β-)=7322 29 (2021Wa16).

Other studies:

1970Ar01: Isotope identification, 232Th metallic target bombarded with 22Ne ions, E=174 MeV. Reaction products at 40|’ were passed through a magnetic spectrometer and were detected with a telescope of E-ΔE surface barrier silicon detectors.

2012Kw02, 2012Zh06: Measurement of 25Ne production cross sections in fragmentation reactions.

Q-value: S(2n)=13024 29, S(2p)=31230 130 (2021Wa16)









E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)Final Levels
     0.0ABCDEFGHI 1/2+ 603 ms 8 
% β- = 100
    
  1702.5 5 A CDEFGHI (5/2,3/2)+     1702.4 5 
  100
     0.0
1/2+
  2087.9A CDE G I (3/2,5/2)+     2088.7
  100
     0.0
1/2+
  3115.8 8   C           1413.2 7 
  3116 2 
  100 14 
   29 14 
  1702.5
     0.0
(5/2,3/2)+
1/2+
  3316.2 11 A  DEFG       1613.4 12 
  100
  1702.5
(5/2,3/2)+
  3321 5 A CDEFG       1234
  1619 5 
  3320
   35 14 
   50 25 
  100 25 
  2087.9
  1702.5
     0.0
(3/2,5/2)+
(5/2,3/2)+
1/2+
  3329  CD    I (3/2,1/2)-     3329
  100
     0.0
1/2+
  3890.9 11 A         (3/2,5/2,7/2)+      574.7 5 
  2188.6 13 
  100 21 
   71 21 
  3316.2
  1702.5

(5/2,3/2)+
  4050 40    D  GH  (7/2,5/2)-     2350 40 
     4.03E3 10 
 
 
  1702.5
     0.0
(5/2,3/2)+
1/2+
  4493A               
  4539A               
  4640A               
     4.70E3 10       G         
  5274A               
  5570A               
  5994A               
  6151A               
  6280 50        H        
  6360A               
  6773A               
  7082A               
  7161A               
  7415A               

E(level): From a least-squares fit to the γ-ray energies. Otherwise from the dataset, when "XREF " indicates one only.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.01/2+ 603 ms 8 
% β- = 100
μ=-1.0060 5
δ<r2>(20Ne,25Ne)=-0.431 fm2 16 (2013An02, in 2011Ma48 -0.429 fm2 123 - uncertainty from 16(stat) and 122(syst)).
  2087.9(3/2,5/2)+   XREF: d(2062)γ(2030)I(2000).
  3316.2   E(level): The levels at 3316.2 and 3321 are proposed as two different levels from the measured 1613γ and 1622γ as shown in Fig. 4 of 2005Pa74 (25F β- decay (82 ms)).
  3321   E(level): The levels at 3316.2 and 3321 are proposed as two different levels from the measured 1613γ and 1622γ as shown in Fig. 4 of 2005Pa74 (25F β- decay (82 ms)).

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1702.5  1702.4E(γ): weighted average of 1702.7 7 from 25F β- decay, 1700.9 4 from 26F β-n decay (8.2 ms), 1700 2 from (24Ne,pγ), 1703 15 from (26Ne,Xγ), and 1707 4 from (36S,Xγ)
  2087.9  2088.7E(γ): from 26F β-n decay (8.2 ms). Others: 2062 25 from (24Ne,pγ) and 2090 10 from (26Ne,Xγ).
  3115.8  1413.2E(γ): From 26F β-n decay (8.2 ms)
I(γ): From 26F β-n decay (8.2 ms)
  3116E(γ): From 26F β-n decay (8.2 ms)
I(γ): From 26F β-n decay (8.2 ms)
  3316.2  1613.4E(γ): from 25F β- decay. Other: 1613 15 (26Ne,Xγ)
I(γ): From 26F β-n decay (8.2 ms)
  3321  1234I(γ): from 25F β- decay with respect to Iγ(1619)=50 25
  1619E(γ): weighted average of 1621 5 from (24Ne,pγ) and 1617 5 from (36S,Xγ). Others: 1622 (25F β- decay (82 ms)), 1620 (26F β-n decay (8.2 ms)).
I(γ): From 26F β-n decay (8.2 ms)
  3320E(γ): From 26F β-n decay (8.2 ms)
I(γ): From 26F β-n decay (8.2 ms)
  3329  3329E(γ): average of 3327 (26F β-n decay (8.2 ms)) and 3330 (24Ne,pγ),(26Ne,25Neγ)
  4050  2350E(γ): From (24Ne,pγ),(26Ne,25Neγ).
     4.03E3E(γ): From (24Ne,pγ),(26Ne,25Neγ).

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