Quenching of Single-Particle Strength inA=15Nuclei,Physical Review Letters

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Quenching of Single-Particle Strength inA=15Nuclei
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-10-03 , DOI: 10.1103/physrevlett.129.152501
B P Kay ₁ , T L Tang ₁ , I A Tolstukhin ₁ , G B Roderick ₂ , A J Mitchell ₂ , Y Ayyad ₃ , S A Bennett ₄ , J Chen ₃ , K A Chipps _{5,

6} , H L Crawford ₇ , S J Freeman ₄ , K Garrett ₄ , M D Gott ₁ , M R Hall ₅ , C R Hoffman ₁ , H Jayatissa ₁ , A O Macchiavelli ₇ , P T MacGregor ₄ , D K Sharp ₄ , G L Wilson _{1,

8}

Affiliation

Absolute cross sections for the addition of

s

- and

d

-wave neutrons to

{}^{14}C

and

{}^{14}N

have been determined simultaneously via the

(d, p)

reaction at

10 MeV / u

. The difference between the neutron and proton separation energies,

Δ S

, is around

- 20 MeV

for the

{}^{14}C + n

system and

+ 8 MeV

for

{}^{14}N + n

. The population of the

1 s_{1 / 2}

and

0 d_{5 / 2}

orbitals for both systems is reduced by a factor of approximately 0.5 compared with the independent single-particle model, or about 0.6 when compared with the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of