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高能强流重离子束入射到固体物质中，沿飞行路径的离子能量沉积密度将改变宏观靶物质的温度和压强等，并可能在高压高密条件下产生新的材料缺陷。本文报道了利用兰州重离子加速器装置HIRFL-CSR引出的能量为264 MeV/u 的Xe36+离子束，入射到LiF晶体靶物质中，在线测量了LiF的发射光谱；观测到沿离子路径的晶体颜色变化；通过解离方法取得了不同位置处的XRD（X-ray Diffraction）与XPS（X-ray photoelectron spectroscopy）结果，显示在Xe离子的布拉格峰区域出现了LiF3（LiF+F2）结构相，讨论了该新的结构缺陷的产生与重离子束能量沉积密度间可能的相关性，这为离子束驱动的高能量密度物理的能量沉积过程提供了一定参考。When high-energy heavy ions beam is incident into solid material, the energy deposition density along the ions flight path can change the macroscopic target temperature and pressure, and may create new material defects under such high-pressure and high-density conditions. To accurately control the extreme state in material generated by heavy ions beam, it is necessary to conduct detailed research on the energy deposition density of ions and figure out the new potential defects in matter. This paper reports the new experiment at the HIRFL-CSR at Lanzhou, where 264 MeV/u Xe36+ions beams are extracted to irradiate a LiF crystal target. The emission spectrum of the LiF was measured in-situ. Moreover, the changes in crystal color along ions path are observed (shown as Fig.1), and XRD (X-ray Diffraction) as well as XPS(X-ray photoelectron spectroscopy) are applied to predict the potential new phases at different positions of crystal through the target dissociation method. It is apparent that in No.3- front(the red line）a new phase around 52.6 degree is found in XRD result, which is believed as LiF3 (LiF+F2) structural phase and appear in the Bragg peak region of Xe ions in LiF. Furthermore, to verify this result, a similar experiment was done by using 430MeV/u 84Kr26+ions beam, and the stacked layered LiF target was analyzed after the irradiation. XPS result shows more complex defects aggregates in the Bragg peak region of Kr ions in LiF at room temperature. In previous study, such complex defects all generated under high temperature conditions. We figure out that these complex defects can be produced around the Bragg peak region of ions in LiF at room temperature, where a temporally high temperature and high pressure condition could be generated. This paper can provide some experimental evidences and references for the target material modification in high-energy density physics research driven by heavy ions beam.
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Keywords:
- LiF crystal /
- heavy ion beam /
- energy density /
- color center
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[1] Kang W, Du Y, Cao S, Zhao H, Lei Y, Wang Y, He B, Sheng L, Song Y, Xiao G, Zhang Y, Li F, Cheng R, Wang Y, Zhang L, Zhao Z, Yang J, Zhao Q, Qi W, Chen Y, Ma B, Wang X, Hu Z, Liu W, Hoffmann D, Gao F, Su Y, Xu Z, Zhan W, Zhang Y, Wu D, Zhao X, Zhang X, Wan F, Qi X, Chen B, Zhang Z, Cao L, Deng Z, Ren J, Huang W, Yang J, Zhou X, Zhou Z, Li J, Zhang S, Zhou W, Yang L, Zhao Y, Tang C, Li J 2020 Sci. Sin. Phys. Mech. Astron. 50 112004
[2] Yang J, Chen Y, Shen G, Zhao Q, Zhang Z, Zhang S, Zhan W, Ma X, Wang Y, Zhao H, Chen L, Lin P, Lei Y, Zhang Y, Yang L, Cheng R, Xiao G, Yang J 2020 Sci. Sin. Phys. Mech. Astron. 50 112011
[3] Matsubayashi M, Faenov A, Pikuz T, Fukuda Y, Kato Y, Yasuda R, Iikura H, Nojima T, Sakai T 2011 Nucl. Instrum. Methods Phys. Res. Sect. Accel. Spectrometers Detect. Assoc. Equip. 651 90
[4] Perez A, Davenas J, Dupuy C H S 1976 Nucl. Instrum. Methods 132 219
[5] Wangts Z G, Dufourtt C, Paumiertt E, Toulemoude M
[6] Perez A, Balanzat E, Dural J 1990 Phys. Rev. B 41 3943
[7] Trautmann C, Toulemonde M, Schwartz K, Costantini J M, Mu A 2000
[8] El-Said A S, Cranney M, Ishikawa N, Iwase A, Neumann R, Schwartz K, Toulemonde M, Trautmann C 2004 Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 218 492
[9] Müller A, Neumann R, Schwartz K, Trautmann C 1998 Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 146 393
[10] Toulemonde M, Assmann W, Trautmann C, Grüner F 2002 Phys. Rev. Lett. 88
[11] Trautmann C, Schwartz K, Geiss O 1998 J. Appl. Phys. 83 3560
[12] Schwartz K, Trautmann C, Steckenreiter T, Geiß O, Krämer M 1998 Phys. Rev. B 58 11232
[13] Davidson A T, Schwartz K, Comins J D, Kozakiewicz A G, Toulemonde M, Trautmann C 2002 Phys. Rev. B 66 214102
[14] Schwartz K, Trautmann C, El-Said A S, Neumann R, Toulemonde M, Knolle W 2004 Phys. Rev. B 70 184104
[15] Pikuz T, Faenov A, Fukuda Y, Kando M, Bolton P, Mitrofanov A, Vinogradov A, Nagasono M, Ohashi H, Yabashi M, Tono K, Senba Y, Togashi T, Ishikawa T 2012 Opt. Express 20 3424
[16] Lushchik A, Lushchik Ch, Schwartz K, Vasil’chenko E, Papaleo R, Sorokin M, Volkov A E, Neumann R, Trautmann C 2007 Phys. Rev. B 76 054114
[17] Thevenard P, Guiraud G, Dupuy C H S, Delaunay B 1977 Radiat. Eff. 32 83
[18] KNUTSONt D, Bray P J
[19] Dauletbekova A, Schwartz K, Sorokin M V, Baizhumanov M, Akilbekov A, Zdorovets M 2015 Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 359 53
[20] Ditter M, Becher M, Orth S, Schwartz K, Trautmann C, Fujara F 2019 Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 441 70
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