| 1. |
- Llewellyn, R. D. O., et al.
(författare)
-
Establishing the Maximum Collectivity in Highly Deformed N = Z Nuclei
- 2020
-
Ingår i: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 124:15
-
Tidskriftsartikel (refereegranskat)abstract
- The lifetimes of the first excited 2(+) states in the N = Z nuclei Zr-80, Y-78, and Sr-76 have been measured using the gamma-ray line shape method following population via nucleon-knockout reactions from intermediate-energy rare-isotope beams. The extracted reduced electromagnetic transition strengths yield new information on where the collectivity is maximized and provide evidence for a significant, and as yet unexplained, odd-odd vs even-even staggering in the observed values. The experimental results are analyzed in the context of state-of-the-art nuclear density-functional model calculations.
|
|
| 2. |
- Llewellyn, R. D. O., et al.
(författare)
-
Spectroscopy of proton-rich Zr-79 : Mirror energy differences in the highly-deformed fpg shell
- 2020
-
Ingår i: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 811
-
Tidskriftsartikel (refereegranskat)abstract
- Energy differences between isobaric analogue states have been extracted for the A = 79, Zr-79/Y-79 mirror pair following their population via nucleon-knockout reactions from intermediate-energy rare-isotope beams. These are the heaviest nuclei where such measurements have been made to date. The deduced mirror energy differences (MED) are compared with predictions from a new density-functional based approach, incorporating isospin-breaking effects of both Coulomb and nuclear charge-symmetry breaking and configuration mixing.
|
|
| 3. |
|
|
| 4. |
- Gao, B., et al.
(författare)
-
New Fe-59 Stellar Decay Rate with Implications for the Fe-60 Radioactivity in Massive Stars
- 2021
-
Ingår i: Physical Review Letters. - : American Physical Society (APS). - 0031-9007 .- 1079-7114. ; 126:15
-
Tidskriftsartikel (refereegranskat)abstract
- The discrepancy between observations from gamma-ray astronomy of the Fe-60/Al-26 gamma-ray flux ratio and recent calculations is an unresolved puzzle in nuclear astrophysics. The stellar beta-decay rate of Fe-59 is one of the major nuclear uncertainties impeding us from a precise prediction. The important Gamow-Teller strengths from the low-lying states in Fe-59 to the Co-59 ground state are measured for the first time using the exclusive measurement of the Co-59(t, He-3 + gamma) Fe-59 charge-exchange reaction. The new stellar decay rate of Fe-59 is a factor of 3.5 +/- 1.1 larger than the currently adopted rate at T = 1.2 GK. Stellar evolution calculations show that the Fe-60 production yield of an 18 solar mass star is decreased significantly by 40% when using the new rate. Our result eliminates one of the major nuclear uncertainties in the predicted yield of Fe-60 and alleviates the existing discrepancy of the Fe-60/Al-26 ratio.
|
|
| 5. |
- Misery, L., et al.
(författare)
-
Pathophysiology and management of sensitive skin : position paper from the special interest group on sensitive skin of the International Forum for the Study of Itch (IFSI)
- 2020
-
Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 34:2, s. 222-229
-
Tidskriftsartikel (refereegranskat)abstract
- The special interest group on sensitive skin of the International Forum for the Study of Itch previously defined sensitive skin as a syndrome defined by the occurrence of unpleasant sensations (stinging, burning, pain, pruritus and tingling sensations) in response to stimuli that normally should not provoke such sensations. This additional paper focuses on the pathophysiology and the management of sensitive skin. Sensitive skin is not an immunological disorder but is related to alterations of the skin nervous system. Skin barrier abnormalities are frequently associated, but there is no cause and direct relationship. Further studies are needed to better understand the pathophysiology of sensitive skin – as well as the inducing factors. Avoidance of possible triggering factors and the use of well-tolerated cosmetics, especially those containing inhibitors of unpleasant sensations, might be suggested for patients with sensitive skin. The role of psychosocial factors, such as stress or negative expectations, might be relevant for subgroups of patients. To date, there is no clinical trial supporting the use of topical or systemic drugs in sensitive skin. The published data are not sufficient to reach a consensus on sensitive skin management. In general, patients with sensitive skin require a personalized approach, taking into account various biomedical, neural and psychosocial factors affecting sensitive skin.
|
|
