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Adhesion improvement of HIVIPP $$^{12}$$C targets on Au backings

HIVIPP法による同位体濃縮炭素12標的の金バッキングプレートへの接着性の改善

菅井 勲*; 武田 泰弘*; 川上 宏金*; 太田 直人*; 牧井 宏之; 宮武 宇也*

Sugai, Isao*; Takeda, Yasuhiro*; Kawakami, Hirokane*; Ota, Naoto*; Makii, Hiroyuki; Miyatake, Hiroari*

Accurate measurement of the cross section of the $$^{12}$$C($$alpha,gamma$$)$$^{16}$$O reaction is very important in nuclear astrophysics. Enriched $$^{12}$$C targets prepared with the HIgh energy VIbrational Powder Plating [HIVIPP] method for this purpose have been used successfully. Initially, however, the $$^{12}$$C deposits for studying this small cross-section partially peeled from their Au backings when irradiated with beam currents $$geq$$ 2 times the 7 $$mu$$A pulsed $$alpha$$-beam used previously. This problem was solved when the amorphous $$^{12}$$C powders were converted to graphite by heat treatment in a high-temperature furnace. We investigated powder heat treatments at temperatures of 2600 to 3500$$^{circ}$$C to reveal which conditions resulted in uniform and highly adhesive depositions on Au backings.

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パーセンタイル:77.44

分野:Instruments & Instrumentation

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