Search for X-ray induced acceleration of the decay of the 31-yr isomer of 178Hf using synchrotron radiation -: art. no. 072503

被引：49

作者：

Ahmad, I ^{[1
]}

Banar, JC

Becker, JA

Gemmell, DS

Kraemer, A

Mashayekhi, A

McNabb, DP

Miller, GG

Moore, EF

Pangault, LN

Rundberg, RS

Schiffer, JP

Shastri, SD

Wang, TF

Wilhelmy, JB

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.87.072503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Enhanced decay of the 31-yr isomer of Hf-178 induced by x-ray irradiation has been reported previously. Here we describe an attempt to reproduce this result with an intense "white" x-ray beam from the Advanced Photon Source. No induced decay was observed. The upper limits for the energy-integrated cross sections for such a process, over the range of energies of 20-60 keV x rays, are less than 2 x 10(-27) cm(2) keV, below the previously reported values by more than 5 orders of magnitude; at 8 keV the limit is 5 x 10(-26) cm(2) keV.

引用

页码：72503 / 1

页数：4

共 17 条

[1]

Amato I, 1999, SCIENCE, V283, P769

[2]

*ARG NAT LAB, 1994, ANLAPSTB17

[3] Progress in the pumping of a gamma-ray laser [J].

Collins, CB ;

Carroll, JJ .

HYPERFINE INTERACTIONS, 1997, 107 (1-4) :3-41

[4]

Collins CB, 1999, LASER PHYS, V9, P8

[5] Accelerated emission of gamma rays from the 31-yr isomer of 178Hf induced by X-ray irradiation [J].

Collins, CB ;

Davanloo, F ;

Iosif, MC ;

Dussart, R ;

Hicks, JM ;

Karamian, SA ;

Ur, CA ;

Popescu, II ;

Kirischuk, VI ;

Carroll, JJ ;

Roberts, HE ;

McDaniel, P ;

Crist, CE .

PHYSICAL REVIEW LETTERS, 1999, 82 (04) :695-698

[6] Study of the gamma emission from the 31-yr isomer of 178Hf Induced by X-ray Irradiation [J].

Collins, CB ;

Davanloo, F ;

Iosif, MC ;

Dussart, R ;

Hicks, JM ;

Karamian, SA ;

Ur, CA ;

Popescu, II ;

Kirischuk, VI ;

Pouvesle, JM ;

McDaniel, P ;

Crist, CE .

PHYSICS OF ATOMIC NUCLEI, 2000, 63 (12) :2067-2072

[7] γ emission from the 31-yr isomer of 178Hf induced by x-ray irradiation -: art. no. 054305 [J].

Collins, CB ;

Davanloo, F ;

Rusu, AC ;

Iosif, MC ;

Zoita, NC ;

Camase, DT ;

Hicks, JM ;

Karamian, SA ;

Ur, CA ;

Popescu, II ;

Dussart, R ;

Pouvesle, JM ;

Kirischuk, VI ;

Strilchuk, NV ;

McDaniel, P ;

Crist, CE .

PHYSICAL REVIEW C, 2000, 61 (05)

[8]

DEJUS RJ, 1993, ANLAPSTB3

[9]

Firestone R. B., 1996, Table of Isotopes, V8th

[10]

LAI B, 1993, ANLAPSTB3

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